16.-Linear-Algebra-by-Kenneth-Hoffman · Problem 3.1.12
Linear Transformations
Mathematics — Linear Algebra · range-null-space-identical-even-dimension
Problem
Let V be an n-dimensional vector space over the field F and let T be a linear transformation from V into V such that the range and null space of T are identical. Prove that n is even. (Can you give an example of such a linear transformation T?)