this post was submitted on 15 Mar 2025
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Science Memes

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[–] fallingcats@discuss.tchncs.de 4 points 1 day ago (2 children)

Wouldn't you need to put anyMatrix first, since matrix multiplication isn't commutative?

[–] pseudo@jlai.lu 2 points 23 hours ago (1 children)

You are right. I will correct it.

[–] fallingcats@discuss.tchncs.de 1 points 23 hours ago* (last edited 16 hours ago) (1 children)

No I just tried it and I was wrong, it seems like it doesn't matter for the ID matrix specifically

[–] pseudo@jlai.lu 1 points 19 hours ago

I need to freshen up on my linear algebra. I don't remember on which sense it goes but I think if you swap the factors, you'll have to you transpose the matrix x to keep the same result.

[–] MBM@lemmings.world 1 points 23 hours ago

Huh? Identity times anyMatrix is also anyMatrix. The matrix just has to have the right dimensions