097
November 28, 2009
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Bonus points for knowing what the (3,3)-entry in the far left matrix is to make it normal ;-)
not sure i even remember what a normal matrix is :) i'd still guess '1', though.
Technically Speakin':
A real Matrix A is normal if A * A^T = A^T * A
Which I guess the one on the left is cause of all the 0s
The hidden number is 1. Poor matrix--being normal is overrated.
Man, I wouldn't want anything to do with a matrix that wasn't unitarily diagonalizable either.
C'mon spiked maths - how about inking up the Commutative joke I sent you - Rogo from down under - on temporary assignment 'up above' in China. Who turned down the heating? Brrrr....
Yo rogo, hope you're enjoying china :D. I'll probably do some of those ideas this week some time since I'll be away at a conference for until Dec 8.
Hidden number: anything but minus 1
OOps, that's for an INVERTIBLE matrix
normal matrix-> it's 1