this post was submitted on 13 Jun 2026
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Science Memes

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top 7 comments
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[–] trxxruraxvr@lemmy.world 38 points 1 day ago

What's really ridiculous here is how this image was cropped

[–] panda_abyss@lemmy.ca 21 points 1 day ago (1 children)

This is either in a category theory book or was written by someone who is going to fucking hate category theory

[–] expr@piefed.social 21 points 1 day ago

Looks like a category theory book. And they're right: using A to notate the identity arrow is ridiculous.

Ah category theory. You know i honestly think the only reason it’s so difficult to learn is not the idea but the jargon/notation-conventions

[–] PM_ME_VINTAGE_30S@anarchist.nexus 9 points 1 day ago (2 children)