Timeline for Characterization of a finitely graded (almost) domain

11 events

when toggle format	what		by	license	comment
Dec 1, 2016 at 0:21	comment	added	Marty		I took the liberty of editing the opening for clarity and conciseness (since I know the person who posed the question).
Dec 1, 2016 at 0:20	history	edited	Marty	CC BY-SA 3.0	Edited opening for clarity.
Dec 1, 2016 at 0:04	history	edited	Exit path	CC BY-SA 3.0	deleted 9 characters in body
Nov 30, 2016 at 23:46	comment	added	Exit path		@YCor Clearly $ab=0$ when $i+j >N$ or $a=b=0$ since $A_N$ is the last nonzero group in the direct sum. The other direction is the condition I'm more interested in
Nov 30, 2016 at 23:25	comment	added	Exit path		@EricWofsey I edited to drop the tensor, does this make more sense?
Nov 30, 2016 at 23:25	history	edited	Exit path	CC BY-SA 3.0	deleted 7 characters in body
Nov 30, 2016 at 23:23	comment	added	Exit path		@EricWofsey It should be $ab \neq 0$ when $a,b \neq 0$.
Nov 30, 2016 at 23:22	comment	added	YCor		The first sentence is indeed unclear (whenever... iff ... sounds weird)
Nov 30, 2016 at 23:19	comment	added	Eric Wofsey		To be clear, are you asking that $ab\neq 0$ when $a,b\neq 0$ or that $ab\neq 0$ when $a\otimes b\neq 0$? It might be the case that $a\otimes b=0$ in $A_i\otimes_{A_0}A_j$ even if $a$ and $b$ are both nonzero.
Nov 30, 2016 at 23:16	review	First posts
Nov 30, 2016 at 23:26
Nov 30, 2016 at 23:14	history	asked	Exit path	CC BY-SA 3.0