diff --git a/src/Math-Core/Number.extension.st b/src/Math-Core/Number.extension.st
index 3bc58963..c9b28b08 100644
--- a/src/Math-Core/Number.extension.st
+++ b/src/Math-Core/Number.extension.st
@@ -1,11 +1,5 @@
 Extension { #name : #Number }
 
-{ #category : #'*Math-Core' }
-Number >> addWithRegularMatrix: aMatrix [
-	"Adds itself to every row of the matrix"
-	^ PMMatrix rows: (aMatrix rowsCollect: [ :row | row + self ])
-]
-
 { #category : #'*Math-Core' }
 Number >> addWithVector: aVector [
 	"Adds itself to each element of the vector"
diff --git a/src/Math-Core/PMVector.class.st b/src/Math-Core/PMVector.class.st
index b9514d98..20beb4db 100644
--- a/src/Math-Core/PMVector.class.st
+++ b/src/Math-Core/PMVector.class.st
@@ -253,12 +253,6 @@ PMVector >> normalized [
 	^ (1 / self norm) * self
 ]
 
-{ #category : #operation }
-PMVector >> productWithMatrix: aMatrix [
-	"Answers the product of aMatrix with the receiver."
-	^aMatrix rowsCollect: [ :each | each * self]
-]
-
 { #category : #operation }
 PMVector >> productWithVector: aVector [
 	"Answers the scalar product of aVector with the receiver."
@@ -268,17 +262,6 @@ PMVector >> productWithVector: aVector [
 			into: [ :sum :each | n := n + 1. (aVector at: n) * each + sum]
 ]
 
-{ #category : #'as yet unclassified' }
-PMVector >> reshapeWithDimensions: dimensionArray [
-	| computedRows rowNum colNum |
-	self checkDimensionalCompatibility: dimensionArray.
-	rowNum := dimensionArray at: 1.
-	colNum := dimensionArray at: 2.
-	computedRows := ((1 to: rowNum) collect: [ :i | (1 to: colNum) collect: [ :j | self at: (i-1*colNum)+j ] ]).
-	
-	^PMMatrix rows: computedRows
-]
-
 { #category : #operation }
 PMVector >> scalarProduct: aVector [
 	
diff --git a/src/Math-Matrix/Number.extension.st b/src/Math-Matrix/Number.extension.st
index 30551f46..81af666e 100644
--- a/src/Math-Matrix/Number.extension.st
+++ b/src/Math-Matrix/Number.extension.st
@@ -1,5 +1,11 @@
 Extension { #name : #Number }
 
+{ #category : #'*Math-Matrix' }
+Number >> addWithRegularMatrix: aMatrix [
+	"Adds itself to every row of the matrix"
+	^ PMMatrix rows: (aMatrix rowsCollect: [ :row | row + self ])
+]
+
 { #category : #'*Math-Matrix' }
 Number >> productWithMatrix: aMatrix [
 ^aMatrix class rows: (aMatrix rowsCollect: [:r| self productWithVector: r])
diff --git a/src/Math-Matrix/PMVector.extension.st b/src/Math-Matrix/PMVector.extension.st
index 6631df75..bd43674c 100644
--- a/src/Math-Matrix/PMVector.extension.st
+++ b/src/Math-Matrix/PMVector.extension.st
@@ -1,5 +1,25 @@
 Extension { #name : #PMVector }
 
+{ #category : #'*Math-Matrix' }
+PMVector >> productWithMatrix: aMatrix [
+
+	"Answers the product of aMatrix with the receiver."
+
+	^ aMatrix rowsCollect: [ :each | each * self ]
+]
+
+{ #category : #'*Math-Matrix' }
+PMVector >> reshapeWithDimensions: dimensionArray [
+
+	| computedRows rowNum colNum |
+	self checkDimensionalCompatibility: dimensionArray.
+	rowNum := dimensionArray at: 1.
+	colNum := dimensionArray at: 2.
+	computedRows := (1 to: rowNum) collect: [ :i | (1 to: colNum) collect: [ :j | self at: i - 1 * colNum + j ] ].
+
+	^ PMMatrix rows: computedRows
+]
+
 { #category : #'*Math-Matrix' }
 PMVector >> tensorProduct: aVector [
 	"Answers the tensor product of the receiver with aVector."
diff --git a/src/Math-Tests-Core/PMVectorTest.class.st b/src/Math-Tests-Core/PMVectorTest.class.st
index 3a140188..51a433b6 100644
--- a/src/Math-Tests-Core/PMVectorTest.class.st
+++ b/src/Math-Tests-Core/PMVectorTest.class.st
@@ -108,17 +108,6 @@ PMVectorTest >> testLessThan [
 	self assert: vec equals: vecCopy asPMVector.
 ]
 
-{ #category : #tests }
-PMVectorTest >> testMatrixConversionWithBothDims [
-	| vect result expected |
-	vect := #(1 0.5 0.2 3 1 -1 7 3 2 12 13 3) asPMVector .
-	result := vect reshapeWithDimensions: #(6 2).
-	
-	expected := PMMatrix rows: #(#(1 0.5) #(0.2 3) #(1 -1) #(7 3) #(2 12) #(13 3)).
-	
-	self assert: result equals: expected.
-]
-
 { #category : #tests }
 PMVectorTest >> testScalarProduct [
 	| u v |
@@ -375,17 +364,6 @@ PMVectorTest >> testVectorSum [
 	self assert: (u sum) equals: 6.
 ]
 
-{ #category : #tests }
-PMVectorTest >> testVectorToVectorConversion [
-	| vect result expected |
-	vect := #(1 0.5 0.2 3 1 -1 7 3 2 12 13 3) asPMVector .
-	result := vect reshapeWithDimensions: #(1 12).
-	
-	expected := PMMatrix rows: #(#(1 0.5 0.2 3 1 -1 7 3 2 12 13 3)).
-	
-	self assert: result equals: expected.
-]
-
 { #category : #tests }
 PMVectorTest >> testVectorZeros [
 	| v |
diff --git a/src/Math-Tests-Matrix/PMMatrixTest.class.st b/src/Math-Tests-Matrix/PMMatrixTest.class.st
index 628c6cba..0104706e 100644
--- a/src/Math-Tests-Matrix/PMMatrixTest.class.st
+++ b/src/Math-Tests-Matrix/PMMatrixTest.class.st
@@ -383,6 +383,18 @@ PMMatrixTest >> testMatrixCloseToPrecision [
 	self deny: (a closeTo: b precision: 0.2)
 ]
 
+{ #category : #tests }
+PMMatrixTest >> testMatrixConversionWithBothDims [
+
+	| vect result expected |
+	vect := #( 1 0.5 0.2 3 1 -1 7 3 2 12 13 3 ) asPMVector.
+	result := vect reshapeWithDimensions: #( 6 2 ).
+
+	expected := PMMatrix rows: #( #( 1 0.5 ) #( 0.2 3 ) #( 1 -1 ) #( 7 3 ) #( 2 12 ) #( 13 3 ) ).
+
+	self assert: result equals: expected
+]
+
 { #category : #comparing }
 PMMatrixTest >> testMatrixCos [
 	| a |
@@ -930,7 +942,7 @@ PMMatrixTest >> testSymmetricMatrixAdd3 [
 	self assert: ((c rowAt: 3) at: 1) equals: 31
 ]
 
-{ #category : #test }
+{ #category : #tests }
 PMMatrixTest >> testTake [
 
 	| m expected |
@@ -967,6 +979,18 @@ PMMatrixTest >> testVectorMatrixOperation [
 	self assert: (v at: 2) equals: 4
 ]
 
+{ #category : #tests }
+PMMatrixTest >> testVectorToVectorConversion [
+
+	| vect result expected |
+	vect := #( 1 0.5 0.2 3 1 -1 7 3 2 12 13 3 ) asPMVector.
+	result := vect reshapeWithDimensions: #( 1 12 ).
+
+	expected := PMMatrix rows: #( #( 1 0.5 0.2 3 1 -1 7 3 2 12 13 3 ) ).
+
+	self assert: result equals: expected
+]
+
 { #category : #'linear algebra' }
 PMMatrixTest >> testVectorTransposeMatrixOperation [
 	"Code Example 8.1"