@themattsimpson surjective is some kinda bullshit French. Injection is actually etymologically dual to *projection*.
@themattsimpson Partially retract that, injective/surjective/bijective is Bourbaki. Injective & projective modules/objects are dual though.
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@themattsimpson To make it more confusing, the definition of injective module is based in a complex way on injective maps.
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. Banned in Sweden. SubGenius, Zhuangist, white-hat troll. Defrocked mathematician. Brain problems.