Is there some elementary proof of invariance of domain?
Invariance of domain at least in statement seems a simple result. I mean,
the first time I saw the statement I thought: "the proof can't be that
bad", but when I searched for it I saw that it needs even algebraic
topology to prove this result.
My doubt is: isn't there any other proof of invariance of domain that
don't need to use algebraic topology? Is there some more elementary proof
of this result?
Thanks very much in advance!
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