Talk:Invariance of domain

[Untitled]

I would really like to add

• This blog provides an elementary proof using Brouwer's fixed point theorem

to the "External Links" section, as it is the first proof I have stumbled upon, which only uses Brouwer's fixed point theorem, instead of homology or degree-theory.

I already tried to do so, but the change was reverted by "XLinkBot". If you also think that adding the link is a good idea, feel free to do so.