diff --git a/tensor_t/src/tensor_t/tensor_t.c b/tensor_t/src/tensor_t/tensor_t.c
index f6ec069..c25f8e6 100644
--- a/tensor_t/src/tensor_t/tensor_t.c
+++ b/tensor_t/src/tensor_t/tensor_t.c
@@ -76,30 +76,30 @@ void tensorProd_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1)
  M[x0,x1,x3..xl x{l+1}...xn] X M[xn,x{n-1},x{n-2}...xl y{l+1} ..ym] = M[x0,x1..xly{l+1}...y{n+m-2l}] (deep = l > 0)\
 M[[i][j]]=sum_{[k]}M0[[i][k]]*M[[k][j]]*/\
 \
-void tensorContractnProd_##type(tensor_##type** MM, tensor_##type *M0, tensor_##type *M1, size_t nestingDepth) {\
-   /* if (!checkMatchProdtensor(M0->dim, M1->dim, nestingDepth)) {\
-        prsize_tf("Deep = %d\n", nestingDepth);\
+void tensorContractnProd_##type(tensor_##type** MM, tensor_##type *M0, tensor_##type *M1, size_t contractionNumber) {\
+   /* if (!checkMatchProdtensor(M0->dim, M1->dim, contractionNumber)) {\
+        prsize_tf("Deep = %d\n", contractionNumber);\
     }*/\
 \
-    size_t len0 = M0->dim->size - nestingDepth;\
-    size_t len1 = M1->dim->size - nestingDepth;\
+    size_t len0 = M0->dim->size - contractionNumber;\
+    size_t len1 = M1->dim->size - contractionNumber;\
 \
     size_t* tsub0 = malloc(sizeof(size_t) *len0);\
     size_t* tsub1 = malloc(sizeof(size_t) *len1);\
-    size_t* tDk1 = malloc(sizeof(size_t) *nestingDepth);\
-    size_t* tDk0 = malloc(sizeof(size_t) *nestingDepth);\
+    size_t* tDk1 = malloc(sizeof(size_t) *contractionNumber);\
+    size_t* tDk0 = malloc(sizeof(size_t) *contractionNumber);\
     subArray(tsub0, M0->dim->perm, 0, len0, 0);\
-    subArray(tsub1, M1->dim->perm, 0, len1, nestingDepth);\
-    subArray(tDk1, M1->dim->perm, 0, nestingDepth, 0);\
-    subArray(tDk0, M0->dim->perm, 0, nestingDepth, len0);\
+    subArray(tsub1, M1->dim->perm, 0, len1, contractionNumber);\
+    subArray(tDk1, M1->dim->perm, 0, contractionNumber, 0);\
+    subArray(tDk0, M0->dim->perm, 0, contractionNumber, len0);\
     /*printArraySzt(tsub0,len0,"tsub0");\
     printArraySzt(tsub1,len1,"tsub1");\
-    printArraySzt(tDk0,nestingDepth,"tDk0");\
-    printArraySzt(tDk1,nestingDepth,"tDk1");*/\
+    printArraySzt(tDk0,contractionNumber,"tDk0");\
+    printArraySzt(tDk1,contractionNumber,"tDk1");*/\
     dimension *dSub0 = init_dim(tsub0, len0);\
     dimension *dSub1 = init_dim(tsub1, len1);\
-    dimension *dM1 = init_dim(tDk1, nestingDepth);\
-    dimension *dM0 = init_dim(tDk0, nestingDepth);\
+    dimension *dM1 = init_dim(tDk1, contractionNumber);\
+    dimension *dM0 = init_dim(tDk0, contractionNumber);\
   /*printDebug_dimension(dSub0,"dSub0");\
   printDebug_dimension(dSub1,"dSub1");\
   printDebug_dimension(dM0,"dM0");\
@@ -129,7 +129,7 @@ void tensorContractnProd_##type(tensor_##type** MM, tensor_##type *M0, tensor_##
     coordM1 = malloc(sizeof(size_t)* M1->dim->size);\
 \
     size_t* Koord ;\
-    Koord = malloc(sizeof(size_t)* nestingDepth);*/\
+    Koord = malloc(sizeof(size_t)* contractionNumber);*/\
 \
     size_t a0_id, a1_id, n0_id, n1_id;\
     for (size_t i = 0; i < M->dim->rank; i++) {\
@@ -146,8 +146,8 @@ void tensorContractnProd_##type(tensor_##type** MM, tensor_##type *M0, tensor_##
             n1_id= a1_id + dSub1->rank * k;\
             M->x[i] += M0->x[n0_id] * M1->x[n1_id];\
             /*vCoordFromLin(Koord, k, dM);\
-            concatArray(coordM0, coord0, Koord, 0, 0, len0, 0, nestingDepth);\
-            concatArray(coordM1, Koord, coord1, 0, 0, nestingDepth, 0, len1);\
+            concatArray(coordM0, coord0, Koord, 0, 0, len0, 0, contractionNumber);\
+            concatArray(coordM1, Koord, coord1, 0, 0, contractionNumber, 0, len1);\
             lin0 = LineFromCoord(coordM0, M0->dim);\
             lin1 = LineFromCoord(coordM1, M1->dim);\
             printf("k:%ld, lin0:%ld, vs n0: %ld\n",k,lin0,n0_id);\
@@ -159,30 +159,30 @@ void tensorContractnProd_##type(tensor_##type** MM, tensor_##type *M0, tensor_##
       /*printf("\n");*/\
     }\
 }\
-void tensorContractnProdNotOpt_##type(tensor_##type** MM, tensor_##type *M0, tensor_##type *M1, size_t nestingDepth) {\
-   /* if (!checkMatchProdtensor(M0->dim, M1->dim, nestingDepth)) {\
-        prsize_tf("Deep = %d\n", nestingDepth);\
+void tensorContractnProdNotOpt_##type(tensor_##type** MM, tensor_##type *M0, tensor_##type *M1, size_t contractionNumber) {\
+   /* if (!checkMatchProdtensor(M0->dim, M1->dim, contractionNumber)) {\
+        prsize_tf("Deep = %d\n", contractionNumber);\
     }*/\
 \
-    size_t len0 = M0->dim->size - nestingDepth;\
-    size_t len1 = M1->dim->size - nestingDepth;\
+    size_t len0 = M0->dim->size - contractionNumber;\
+    size_t len1 = M1->dim->size - contractionNumber;\
 \
     size_t* tsub0 = malloc(sizeof(size_t) *len0);\
     size_t* tsub1 = malloc(sizeof(size_t) *len1);\
-    size_t* tDk1 = malloc(sizeof(size_t) *nestingDepth);\
-    size_t* tDk0 = malloc(sizeof(size_t) *nestingDepth);\
+    size_t* tDk1 = malloc(sizeof(size_t) *contractionNumber);\
+    size_t* tDk0 = malloc(sizeof(size_t) *contractionNumber);\
     subArray(tsub0, M0->dim->perm, 0, len0, 0);\
-    subArray(tsub1, M1->dim->perm, 0, len1, nestingDepth);\
-    subArray(tDk1, M1->dim->perm, 0, nestingDepth, 0);\
-    subArray(tDk0, M0->dim->perm, 0, nestingDepth, len0);\
+    subArray(tsub1, M1->dim->perm, 0, len1, contractionNumber);\
+    subArray(tDk1, M1->dim->perm, 0, contractionNumber, 0);\
+    subArray(tDk0, M0->dim->perm, 0, contractionNumber, len0);\
     /*printArraySzt(tsub0,len0,"tsub0");\
     printArraySzt(tsub1,len1,"tsub1");\
-    printArraySzt(tDk0,nestingDepth,"tDk0");\
-    printArraySzt(tDk1,nestingDepth,"tDk1");*/\
+    printArraySzt(tDk0,contractionNumber,"tDk0");\
+    printArraySzt(tDk1,contractionNumber,"tDk1");*/\
     dimension *dSub0 = init_dim(tsub0, len0);\
     dimension *dSub1 = init_dim(tsub1, len1);\
-    dimension *dM1 = init_dim(tDk1, nestingDepth);\
-    dimension *dM0 = init_dim(tDk0, nestingDepth);\
+    dimension *dM1 = init_dim(tDk1, contractionNumber);\
+    dimension *dM0 = init_dim(tDk0, contractionNumber);\
   /*printDebug_dimension(dSub0,"dSub0");\
   printDebug_dimension(dSub1,"dSub1");\
   printDebug_dimension(dM0,"dM0");\
@@ -212,7 +212,7 @@ void tensorContractnProdNotOpt_##type(tensor_##type** MM, tensor_##type *M0, ten
     coordM1 = malloc(sizeof(size_t)* M1->dim->size);\
 \
     size_t* Koord ;\
-    Koord = malloc(sizeof(size_t)* nestingDepth);\
+    Koord = malloc(sizeof(size_t)* contractionNumber);\
 \
     for (size_t i = 0; i < M->dim->rank; i++) {\
         vCoordFromLin(coord, i, M->dim);\
@@ -221,8 +221,8 @@ void tensorContractnProdNotOpt_##type(tensor_##type** MM, tensor_##type *M0, ten
         M->x[i] = 0;\
         for (size_t k = 0; k < dM->rank; k++) {\
             vCoordFromLin(Koord, k, dM);\
-            concatArray(coordM0, coord0, Koord, 0, 0, len0, 0, nestingDepth);\
-            concatArray(coordM1, Koord, coord1, 0, 0, nestingDepth, 0, len1);\
+            concatArray(coordM0, coord0, Koord, 0, 0, len0, 0, contractionNumber);\
+            concatArray(coordM1, Koord, coord1, 0, 0, contractionNumber, 0, len1);\
             lin0 = LineFromCoord(coordM0, M0->dim);\
             lin1 = LineFromCoord(coordM1, M1->dim);\
             M->x[i] += M0->x[lin0] * M1->x[lin1];\
diff --git a/tensor_t/src/tensor_t/tensor_t.h b/tensor_t/src/tensor_t/tensor_t.h
index 860ecd7..f9b1007 100644
--- a/tensor_t/src/tensor_t/tensor_t.h
+++ b/tensor_t/src/tensor_t/tensor_t.h
@@ -12,8 +12,8 @@ typedef struct tensor_##type tensor_##type;\
 tensor_##type * CREATE_TENSOR_##type(dimension *dim); \
 void tensorProdNotOpt_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1); \
 void tensorProd_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1); \
-void tensorContractnProd_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1, size_t nestingDepth); \
-void tensorContractnProdNotOpt_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1, size_t nestingDepth); \
+void tensorContractnProd_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1, size_t contractionNumber); \
+void tensorContractnProdNotOpt_##type(tensor_##type **MM, tensor_##type *M0, tensor_##type *M1, size_t contractionNumber); \
 
 
 GENERATE_TENSOR_TYPE(TYPE_FLOAT);