diff --git a/examples/12_Fibrations.ipynb b/examples/12_Fibrations.ipynb
index f4c3771..47f84f7 100644
--- a/examples/12_Fibrations.ipynb
+++ b/examples/12_Fibrations.ipynb
@@ -139,7 +139,7 @@
      "output_type": "stream",
      "text": [
       "\n",
-      "The object is a STANDARD-OBJECT of type CAT::SIMPLICIAL-MRPH.\n",
+      "The object is a STANDARD-OBJECT of type SIMPLICIAL-MRPH.\n",
       "0. SORC: [K1 Simplicial-Set]\n",
       "1. TRGT: [K6 Abelian-Simplicial-Group]\n",
       "2. DEGR: -1\n",
@@ -150,7 +150,7 @@
       "7. RSLTS: #(#() #() #() #() #() #() #() #() #() #() ...)\n",
       "8. IDNM: 18\n",
       "9. ORGN: (S2-TW-KZ2)\n",
-      "10. SINTR: #<FUNCTION (LAMBDA (DMNS GMSM) :IN \"/root/cl-jupyter-master/cl-jupyter.lisp\") {10055F3DCB}>\n",
+      "10. SINTR: #<FUNCTION (LAMBDA (DMNS GMSM) :IN \"/root/cl-jupyter-master/cl-jupyter.lisp\") {1005613DCB}>\n",
       "\n",
       "> "
      ]
@@ -317,9 +317,9 @@
      "output_type": "stream",
      "text": [
       "\n",
-      "The object is a STANDARD-OBJECT of type CAT::SIMPLICIAL-SET.\n",
-      "0. CMPR: #<CLOSURE (FLET CAT::RSLT :IN CRTS-PRDC-CMPR) {1005A4399B}>\n",
-      "1. BASIS: #<CLOSURE (FLET CAT::RSLT :IN CRTS-PRDC-BASIS) {1005A4414B}>\n",
+      "The object is a STANDARD-OBJECT of type SIMPLICIAL-SET.\n",
+      "0. CMPR: #<CLOSURE (FLET CAT::RSLT :IN CRTS-PRDC-CMPR) {1005A61C0B}>\n",
+      "1. BASIS: #<CLOSURE (FLET CAT::RSLT :IN CRTS-PRDC-BASIS) {1005A623BB}>\n",
       "2. BSGN: <CrPr - * - 0>\n",
       "3. DFFR: [K25 Morphism (degree -1): K24 -> K24]\n",
       "4. GRMD: [K19 Simplicial-Set]\n",
@@ -327,7 +327,7 @@
       "6. IDNM: 24\n",
       "7. ORGN: (FIBRATION-TOTAL [K18 Fibration K1 -> K6])\n",
       "8. CPRD: [K28 Morphism (degree 0): K24 -> K26]\n",
-      "9. FACE: #<CLOSURE (FLET CAT::RSLT :IN CAT::FIBRATION-TOTAL-FACE) {1005A4A52B}>\n",
+      "9. FACE: #<CLOSURE (FLET CAT::RSLT :IN CAT::FIBRATION-TOTAL-FACE) {1005A6879B}>\n",
       "\n",
       "> "
      ]
@@ -451,7 +451,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 0) :\n",
       "<TnPr * 0> \n",
       "End of computing.\n",
@@ -461,7 +461,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * 1> \n",
       "End of computing.\n",
@@ -477,14 +477,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 1.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * 1> \n",
       "End of computing.\n",
@@ -494,13 +494,13 @@
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 2) :\n",
       "<TnPr * 2> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 2) :\n",
       "<TnPr S2 0> \n",
       "End of computing.\n",
@@ -514,20 +514,20 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 2.\n",
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 2) :\n",
       "<TnPr * 2> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 2) :\n",
       "<TnPr S2 0> \n",
       "End of computing.\n",
@@ -537,13 +537,13 @@
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 3) :\n",
       "<TnPr * 3> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 3) :\n",
       "<TnPr S2 1> \n",
       "End of computing.\n",
@@ -559,20 +559,20 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 3.\n",
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 3) :\n",
       "<TnPr * 3> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 3) :\n",
       "<TnPr S2 1> \n",
       "End of computing.\n",
@@ -582,13 +582,13 @@
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 4) :\n",
       "<TnPr * 4> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 4) :\n",
       "<TnPr S2 2> \n",
       "End of computing.\n",
@@ -604,20 +604,20 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 4.\n",
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 4) :\n",
       "<TnPr * 4> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 4) :\n",
       "<TnPr S2 2> \n",
       "End of computing.\n",
@@ -627,13 +627,13 @@
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 5) :\n",
       "<TnPr * 5> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 5) :\n",
       "<TnPr S2 3> \n",
       "End of computing.\n",
@@ -647,20 +647,20 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 5.\n",
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 5) :\n",
       "<TnPr * 5> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 5) :\n",
       "<TnPr S2 3> \n",
       "End of computing.\n",
@@ -670,13 +670,13 @@
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 6) :\n",
       "<TnPr * 6> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 6) :\n",
       "<TnPr S2 4> \n",
       "End of computing.\n",
@@ -692,20 +692,20 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 6.\n",
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 6) :\n",
       "<TnPr * 6> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 6) :\n",
       "<TnPr S2 4> \n",
       "End of computing.\n",
@@ -715,13 +715,13 @@
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 7) :\n",
       "<TnPr * 7> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 7) :\n",
       "<TnPr S2 5> \n",
       "End of computing.\n",
@@ -735,20 +735,20 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 7.\n",
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 7) :\n",
       "<TnPr * 7> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 7) :\n",
       "<TnPr S2 5> \n",
       "End of computing.\n",
@@ -758,13 +758,13 @@
       "Rank of the source-module : 2.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/2 (dimension 8) :\n",
       "<TnPr * 8> \n",
       "End of computing.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 2/2 (dimension 8) :\n",
       "<TnPr S2 6> \n",
       "End of computing.\n",
@@ -780,7 +780,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n"
      ]
     },
@@ -917,7 +917,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 0) :\n",
       "<TnPr * *> \n",
       "End of computing.\n",
@@ -927,7 +927,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * S1> \n",
       "End of computing.\n",
@@ -943,14 +943,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 1.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * S1> \n",
       "End of computing.\n",
@@ -960,7 +960,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 2) :\n",
       "<TnPr S2 *> \n",
       "End of computing.\n",
@@ -974,14 +974,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 2.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 2) :\n",
       "<TnPr S2 *> \n",
       "End of computing.\n",
@@ -991,7 +991,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 3) :\n",
       "<TnPr S2 S1> \n",
       "End of computing.\n",
@@ -1005,14 +1005,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 3.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 3) :\n",
       "<TnPr S2 S1> \n",
       "End of computing.\n",
@@ -1032,7 +1032,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 4.\n",
@@ -1051,7 +1051,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 5.\n",
@@ -1070,7 +1070,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n"
      ]
     },
@@ -1214,14 +1214,6 @@
     "collapsed": false
    },
    "outputs": [
-    {
-     "name": "stderr",
-     "output_type": "stream",
-     "text": [
-      "SIMPLE-STYLE-WARNING: \n",
-      "  #<SB-INT:SIMPLE-STYLE-WARNING \"undefined ~(~A~): ~S\" {1006D552E3}>\n"
-     ]
-    },
     {
      "data": {
       "text/plain": [
@@ -1356,7 +1348,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 0) :\n",
       "<TnPr * *> \n",
       "End of computing.\n",
@@ -1366,7 +1358,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * S1> \n",
       "End of computing.\n",
@@ -1382,14 +1374,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 1.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * S1> \n",
       "End of computing.\n",
@@ -1399,7 +1391,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 2) :\n",
       "<TnPr S2 *> \n",
       "End of computing.\n",
@@ -1413,14 +1405,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 2.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 2) :\n",
       "<TnPr S2 *> \n",
       "End of computing.\n",
@@ -1430,7 +1422,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 3) :\n",
       "<TnPr S2 S1> \n",
       "End of computing.\n",
@@ -1444,14 +1436,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 3.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 3) :\n",
       "<TnPr S2 S1> \n",
       "End of computing.\n",
@@ -1471,7 +1463,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 4.\n",
@@ -1490,7 +1482,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 5.\n",
@@ -1509,7 +1501,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 6.\n",
@@ -1528,7 +1520,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 7.\n",
@@ -1547,7 +1539,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 8.\n",
@@ -1566,7 +1558,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 9.\n",
@@ -1585,7 +1577,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n"
      ]
     },
@@ -1620,7 +1612,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 0) :\n",
       "<TnPr * *> \n",
       "End of computing.\n",
@@ -1630,7 +1622,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * S1> \n",
       "End of computing.\n",
@@ -1646,14 +1638,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 1.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * S1> \n",
       "End of computing.\n",
@@ -1663,7 +1655,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 2) :\n",
       "<TnPr S2 *> \n",
       "End of computing.\n",
@@ -1679,14 +1671,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 2.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 2) :\n",
       "<TnPr S2 *> \n",
       "End of computing.\n",
@@ -1696,7 +1688,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 3) :\n",
       "<TnPr S2 S1> \n",
       "End of computing.\n",
@@ -1710,14 +1702,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 3.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 3) :\n",
       "<TnPr S2 S1> \n",
       "End of computing.\n",
@@ -1737,7 +1729,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 4.\n",
@@ -1756,7 +1748,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 5.\n",
@@ -1775,7 +1767,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 6.\n",
@@ -1794,7 +1786,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 7.\n",
@@ -1813,7 +1805,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 8.\n",
@@ -1832,7 +1824,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 9.\n",
@@ -1851,7 +1843,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n"
      ]
     },
@@ -1886,7 +1878,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 0) :\n",
       "<TnPr * *> \n",
       "End of computing.\n",
@@ -1896,7 +1888,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * S1> \n",
       "End of computing.\n",
@@ -1912,14 +1904,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 1.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * S1> \n",
       "End of computing.\n",
@@ -1929,7 +1921,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 2) :\n",
       "<TnPr S2 *> \n",
       "End of computing.\n",
@@ -1945,14 +1937,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 2.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 2) :\n",
       "<TnPr S2 *> \n",
       "End of computing.\n",
@@ -1962,7 +1954,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 3) :\n",
       "<TnPr S2 S1> \n",
       "End of computing.\n",
@@ -1976,14 +1968,14 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n",
       "\n",
       "Computing boundary-matrix in dimension 3.\n",
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 3) :\n",
       "<TnPr S2 S1> \n",
       "End of computing.\n",
@@ -2003,7 +1995,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n"
      ]
     },
@@ -2038,7 +2030,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 1) :\n",
       "<TnPr * S1> \n",
       "End of computing.\n",
@@ -2048,7 +2040,7 @@
       "Rank of the source-module : 1.\n",
       "\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "Computing the boundary of the generator 1/1 (dimension 2) :\n",
       "<TnPr S2 *> \n",
       "End of computing.\n",
@@ -2064,7 +2056,7 @@
       "\n",
       "---done---\n",
       "\n",
-      ";; Clock -> 2016-04-23, 23h 12m 59s.\n",
+      ";; Clock -> 2016-04-24, 0h 3m 41s.\n",
       "\n"
      ]
     },
diff --git a/examples/15_Loop_spaces_fibrations.ipynb b/examples/15_Loop_spaces_fibrations.ipynb
index bacd2fa..88f45ce 100644
--- a/examples/15_Loop_spaces_fibrations.ipynb
+++ b/examples/15_Loop_spaces_fibrations.ipynb
@@ -148,14 +148,6 @@
     "collapsed": false
    },
    "outputs": [
-    {
-     "name": "stderr",
-     "output_type": "stream",
-     "text": [
-      "SIMPLE-STYLE-WARNING: \n",
-      "  #<SB-INT:SIMPLE-STYLE-WARNING \"undefined ~(~A~): ~S\" {10054BB153}>\n"
-     ]
-    },
     {
      "data": {
       "text/plain": [