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To: I want the USA back
From Wikipedia:

A homomorphism is a map that preserves selected structure between two algebraic structures, with the structure to be preserved being given by the naming of the homomorphism. Particular definitions of homomorphism include the following:

Is it clear, now?

27 posted on 12/28/2013 1:13:08 PM PST by gitmo (If your theology doesn't become your biography, what good is it?)
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To: gitmo

I am uncomfortable with “A functor is a homomorphism between two categories.”. Homomorphism preserves some structure, and while categories have object with structure, I’m unclear what they have themselves. (I shouldn’t anthropomorphize, but some categories cute.)

Anyway, one of the developers (Steenrod) called “abstract nonsense”.


28 posted on 12/28/2013 1:37:14 PM PST by Blagden Alley
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