Write a function to determine whether or not the matrix is a projector. Projector matrices are defined as P^2 = P.
test 8 is not a symmetric matrix, is it a projector matrix?
Sorry about that one. I've removed that test case. I don't know how long it will take for the re-scoring to propagate, though.
Is my wife right?
Project Euler: Problem 1, Multiples of 3 and 5
Twins in a Window
Back to basics 6 - Column Vector
Stress-Strain Properties - 2
Divisible by n, prime divisors (including powers)
Divisible by 8
Divisible by n, prime divisors from 20 to 200
Divisible by 15
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