Mark Spezzano wrote:
I need a text for a newbie.
While the other books suggested are excellent, I think that they would
be hard going if you find Barr & Wells difficult.
The simplest introduction to the ideas of category theory that I know is
"Conceptual Mathematics" by F W Lawvere & S H Schanuel.
There are a great many online resources including many good books on
category theory. But Barr & Wells is one of the best for application to
Computing.
ael
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