Camilla Vaernes
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 Aug 4 accepted For a root system, why does $\beta\in\Delta_+\setminus\{\alpha_i\}$ imply $(\beta+\mathbb{Z}\alpha_i)\cap\Delta\subset\Delta_+$? Aug 4 comment For a root system, why does $\beta\in\Delta_+\setminus\{\alpha_i\}$ imply $(\beta+\mathbb{Z}\alpha_i)\cap\Delta\subset\Delta_+$? Thanks Ted, I forgot positive roots had all coefficients positive, not just positive height. Aug 4 revised For a root system, why does $\beta\in\Delta_+\setminus\{\alpha_i\}$ imply $(\beta+\mathbb{Z}\alpha_i)\cap\Delta\subset\Delta_+$? edited tags Aug 4 revised For a root system, why does $\beta\in\Delta_+\setminus\{\alpha_i\}$ imply $(\beta+\mathbb{Z}\alpha_i)\cap\Delta\subset\Delta_+$? deleted 2 characters in body; edited tags Aug 4 asked For a root system, why does $\beta\in\Delta_+\setminus\{\alpha_i\}$ imply $(\beta+\mathbb{Z}\alpha_i)\cap\Delta\subset\Delta_+$? Jul 29 awarded Popular Question Mar 21 awarded Yearling Mar 21 awarded Nice Question Feb 15 asked Restricting codomain of dominant map $\varphi\colon X\to Y$ of varieties to get a finite map? Feb 15 accepted The local rings of $xy=0$ and $xy+x^3+y^3=0$ are not isomorphic, but have isomorphic completions? Dec 11 awarded Autobiographer Dec 11 asked The local rings of $xy=0$ and $xy+x^3+y^3=0$ are not isomorphic, but have isomorphic completions? Dec 11 accepted Conditions to ensure the chain homotopy category $K(\mathcal{A})$ is abelian? Jul 2 awarded Curious Apr 22 comment Conditions to ensure the chain homotopy category $K(\mathcal{A})$ is abelian? @ZhenLin I guess I'm mostly curious if there are cases where it is in fact abelian. Apr 22 asked Conditions to ensure the chain homotopy category $K(\mathcal{A})$ is abelian? Nov 17 comment If $T$ has an adjoint, why is $T(X\times Y)\simeq T(X)\times T(Y)$? Thanks Stefan. What is $\eta_B$? Nov 17 asked If $T$ has an adjoint, why is $T(X\times Y)\simeq T(X)\times T(Y)$? Nov 17 accepted What is meant by a natural morphism $T(X\times Y)\to T(X)\times T(Y)$? Nov 17 comment What is meant by a natural morphism $T(X\times Y)\to T(X)\times T(Y)$? Thank you Smoore.