Update index.md

contrib/numpy/index.md

@@ -1,3 +1,12 @@
 # List of sections
 
-- [Section title](filename.md)
+* [Basic Mathematics](#BasicMaths)
+   * [What is a Matrix?](#Matrix-Intro)
+   * [Scalars and Vectors](#Scalars-Vectors)
+   * [Arrays in Python](#Arrays)
+   * [What is a Tensor?](#Tensors)
+   * [Addition and Subtraction in Matrices](#Arithmetic)
+   * [Transpose of Matrices & Vectors](#Transpose)
+   * [Dot Product](#DotProduct)
+   * [Dot Product of Matrices](#DotMatrices)
+