533 B
533 B
Isomorph
isomorphism:
\\(f:A→B\\) which can be "undone" _i.e._
\\(∃g:B→A\\), \\(g∘f=id\_A\\) & \\(f∘g=id\_B\\)
in this case, \\(A\\) & \\(B\\) are isomorphic.
A≌B means A and B are essentially the same.
In Category Theory, = is in fact mostly ≌.
For example in commutative diagrams.