2.10a left/right inverse and injective/surjective

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  1. Matthew Towers
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Автор

This was very helpful and clear, thank you!

raihanahlukman
Автор

I didn't absorb the 1st proof completely; f should have mapped x_0 to some element in Y, shouldn't it? So, how on earth, could we map elements of Y not in Img(f) to x_0?!!

OmarAhmed-icfw
Автор

Does the proof of (right inv. <=> injective) rely on axiom of choice?

stearin
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