#21285 closed defect (fixed)

change ring does not work for affine morphisms

Reported by: bhutz Owned by:
Priority: minor Milestone: sage-7.4
Component: algebraic geometry Keywords:
Cc: gjorgenson Merged in:
Authors: Ben Hutz Reviewers: Grayson Jorgenson
Report Upstream: N/A Work issues:
Branch: 50d05de (Commits) Commit: 50d05de7b5c3c1e7dc134ad4c1548a9b0186fbbd
Dependencies: Stopgaps:

Description

the following does not work

 K.<a> = QuadraticField(-1)
 A.<x,y> = AffineSpace(K, 2)
 H = End(A)
 phi = H([x/y, y])
 emb = K.embeddings(QQbar)[0]
 phi.change_ring(emb)

since the coordiante ring is a fraction field

Change History (5)

comment:1 Changed 13 months ago by bhutz

  • Branch set to u/bhutz/t/21285

comment:2 Changed 13 months ago by bhutz

  • Branch u/bhutz/t/21285 deleted
  • Status changed from new to needs_review

comment:3 Changed 13 months ago by bhutz

  • Branch set to u/bhutz/t/21285
  • Commit set to 50d05de7b5c3c1e7dc134ad4c1548a9b0186fbbd

New commits:

50d05de21285: error in change_ring for affine morphisms

comment:4 Changed 13 months ago by gjorgenson

  • Reviewers set to Grayson Jorgenson
  • Status changed from needs_review to positive_review

Thanks for fixing this. Looks good to me.

comment:5 Changed 13 months ago by vbraun

  • Branch changed from u/bhutz/t/21285 to 50d05de7b5c3c1e7dc134ad4c1548a9b0186fbbd
  • Resolution set to fixed
  • Status changed from positive_review to closed
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