Replies to post #31400 on Spelling, Grammar and Other OOPS!

[Frayed Knot]

I never new about a "pulation" and I certainly didn't no there was a MINI version..

Thanks! always enjoy learning knew things!


Who knew it's a square!

In category theory, a branch of mathematics, a pulation square (also called a Doolittle diagram) is a diagram that is simultaneously a pullback square and a pushout square. It is a self-dual concept.