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 Feb 24 awarded Notable Question Jul 7 comment $0,1,0,1,0,1$… has only $2$ limit points It's easy to find the limit points of a sequence $(s_n)$ if each $s_n$ is an integer. Try proving that if $(s_n)$ is a sequence of integers, then $x$ is a limit point of $(s_n)$ if and only if $x$ occurs infinitely often. Apr 8 asked Formal proof that $N$ is the smallest infinite set Mar 6 comment When can I paste together two homeomorphisms? How can I use this condition to solve the Hatcher problem? I discovered the condition on my own, but still couldn't prove that it applies to the comb space. Mar 5 asked When can I paste together two homeomorphisms? Mar 3 accepted What is the mapping torus of f(theta)=2*theta on S^1 Mar 1 asked What is the mapping torus of f(theta)=2*theta on S^1 Feb 23 comment Will Steve the train engineer be mad? You may be conflating train cars with "standard-size containers". 25 containers are loaded onto each train car. Feb 6 accepted Is this plus sign a covering space of $S^1 \vee S^1$? Feb 6 awarded Yearling Feb 6 asked Is this plus sign a covering space of $S^1 \vee S^1$? Nov 8 answered Every question solved by one of two students Nov 2 accepted Name for the set {Mv : |v| = 1} Nov 1 asked Name for the set {Mv : |v| = 1} Sep 26 accepted What is the 'type' of a natural transformation Sep 25 asked What is the 'type' of a natural transformation Sep 20 awarded Popular Question Aug 17 accepted Minimize $\cos(t)\cos(t-\alpha)$ Aug 17 asked Minimize $\cos(t)\cos(t-\alpha)$ Jul 2 awarded Curious