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 Aug 20 asked Typo or additional hypotheses needed in problem 5, p.71 of Bredon's Topology and Geometry? Aug 19 revised A functional structure on the graph of the absolute value function Added clarification Aug 19 revised A functional structure on the graph of the absolute value function Added question note Aug 19 accepted Functionally structured spaces and manifolds Aug 19 asked A functional structure on the graph of the absolute value function Aug 14 revised Functionally structured spaces and manifolds Definition using sheaves Aug 9 revised Functionally structured spaces and manifolds Clarification of well defined function Aug 8 revised Functionally structured spaces and manifolds Added links Aug 8 revised Functionally structured spaces and manifolds Tagg added Aug 8 answered Functionally structured spaces and manifolds Aug 8 comment Functionally structured spaces and manifolds I guess you mean that smooth function $h$ be unique, as $g$ is not assumed smooth. Aug 8 asked Functionally structured spaces and manifolds Aug 4 comment Nets, dense subsets and continuous maps I think he/she meant $D$. Aug 4 comment Nets, dense subsets and continuous maps $f=g$ on $X$? $f$'s domain is $D$. What do you mean? $g$ seems to extend $f$. So I would say that $f=g$ on $D$. But that it does so continuously is not so clear to me. Aug 4 revised Nets, dense subsets and continuous maps Wrong domain of g corrected and assumption on f clarified Aug 4 suggested approved edit on Nets, dense subsets and continuous maps Aug 2 accepted Upper triangular matrices in $\mathrm{SL}(2,\mathbb{R})$ Aug 2 comment Upper triangular matrices in $\mathrm{SL}(2,\mathbb{R})$ And that is how it is done. Nice! Aug 2 comment Upper triangular matrices in $\mathrm{SL}(2,\mathbb{R})$ Yes, $T$ is clearly non-compact. That is precisely why I am asking. Aug 2 revised Upper triangular matrices in $\mathrm{SL}(2,\mathbb{R})$ Obvious fact added