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Timeline for Picard group of a cusp [duplicate]

Current License: CC BY-SA 4.0

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Sep 12, 2023 at 6:39 history closed Steven Landsburg
Max Horn
Friedrich Knop
Bugs Bunny
CommunityBot
Duplicate of When $R $ is a cusp then $K_0(R) \ncong K_0(R[s])$
Sep 6, 2023 at 4:34 review Close votes
Sep 12, 2023 at 6:41
Mar 25, 2023 at 1:48 comment added user443060 @Stahl yes, there was a notational clash, I have fixed it
Mar 25, 2023 at 1:43 history edited user443060 CC BY-SA 4.0
edited body
Mar 25, 2023 at 0:34 comment added Stahl @Wojowu Ah yes, that would make more sense.
Mar 25, 2023 at 0:33 comment added Wojowu @Stahl I suspect there's a notational clash, and OP means to take the polynomial ring over $R$, which probably should be denoted by $R[T]$ or some other letter.
Mar 25, 2023 at 0:32 comment added Stahl Am I missing something here? If $R = k[t^2,t^3],$ then $R[t] = k[t],$ so you're just looking at the Picard group of $k[t].$
Mar 24, 2023 at 23:57 history edited YCor CC BY-SA 4.0
formatting
Mar 24, 2023 at 18:42 history asked user443060 CC BY-SA 4.0