Opened 2 years ago

Closed 2 years ago

#23965 closed defect (fixed)

Coercion to fraction field is injective

Reported by: saraedum Owned by:
Priority: major Milestone: sage-8.1
Component: padics Keywords:
Cc: Merged in:
Authors: Julian Rüth Reviewers: David Roe
Report Upstream: N/A Work issues:
Branch: a4d9ad6 (Commits) Commit: a4d9ad6429371fc8cca4b60353642bb36cf1402a
Dependencies: #23510 Stopgaps:

Description (last modified by saraedum)

Currently this coercion is not detected as being injective: 

sage: R=ZpFM(3)
sage: K=R.fraction_field()
sage: K.coerce_map_from(R).is_injective()
NotImplementedError

Change History (10)

comment:1 Changed 2 years ago by saraedum

  • Branch set to u/saraedum/coercion_to_fraction_field_is_injective

comment:2 Changed 2 years ago by saraedum

  • Commit set to 55b33e4ecbe79e0731d6f14a2f39afeb5f668689
  • Description modified (diff)

New commits:

​55b33e4Coercions to the fraction field are injective

comment:3 Changed 2 years ago by saraedum

  • Authors set to Julian Rüth

comment:4 Changed 2 years ago by saraedum

  • Status changed from new to needs_review

comment:5 Changed 2 years ago by saraedum

  • Dependencies set to #23510

comment:6 Changed 2 years ago by roed

  • Branch changed from u/saraedum/coercion_to_fraction_field_is_injective to u/roed/coercion_to_fraction_field_is_injective

comment:7 Changed 2 years ago by roed

  • Commit changed from 55b33e4ecbe79e0731d6f14a2f39afeb5f668689 to a4d9ad6429371fc8cca4b60353642bb36cf1402a

I merged in #23510 and added a try/except block around the call to fraction_field(), since this can raise a TypeError. If you're happy with this change, positive review once tests pass.

Last 10 new commits:

​cb882fdUpdate add_bigoh to account for fixed-mod having a fraction field
​a826978Fix _tester_add_bigoh
​883e6b5Fix doctest in local_generic_element.pyx
​52cbd2aMerge branch 'u/roed/fixed_mod_frac_field' of git://trac.sagemath.org/sage into t/23510/fixed_mod_frac_field
​bc59ffaMerge branch 't/14825/polynomial_representation_of_a_padic_number' into t/23510/fixed_mod_frac_field
​3292259Merge branch 'u/saraedum/fixed_mod_frac_field' of git://trac.sagemath.org/sage into t/23510/fixed_mod_frac_field
​dad02c7Merge branch 'u/saraedum/fixed_mod_frac_field' of git://trac.sagemath.org/sage into t/23510/fixed_mod_frac_field
​189ac2bAdd _test_fraction_field to the coercion tutorial
​df62c48Merge branch 'u/roed/fixed_mod_frac_field' of git://trac.sagemath.org/sage into t/23965/fracfield_coercion_injective
​a4d9ad6Catch exceptions raised by attempting to find fraction field

comment:8 Changed 2 years ago by saraedum

  • Reviewers set to David Roe
  • Work issues set to doctests pass ⇒ positive review

comment:9 Changed 2 years ago by roed

  • Status changed from needs_review to positive_review
  • Work issues doctests pass ⇒ positive review deleted

Tests pass.

comment:10 Changed 2 years ago by vbraun

  • Branch changed from u/roed/coercion_to_fraction_field_is_injective to a4d9ad6429371fc8cca4b60353642bb36cf1402a
  • Resolution set to fixed
  • Status changed from positive_review to closed
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