Linear Algebra: Difference between revisions

Revision as of 19:28, 20 November 2017

Given two matrices of the same size whose columns all sum to 1, the (cross) product of those will also have columns that total to 1.

 A * A^-1 = A^-1 * A = I

but

 A * B ≠ B * A

@@ Line 2: / Line 2: @@
    A * A<sup>-1</sup> = A<sup>-1</sup> * A = I
+but
+  A * B &ne; B * A