Ticket #12007 (closed defect: duplicate)

Opened 19 months ago

Last modified 12 months ago

creation of extension field of finite field needs more parameter checking

Reported by: mariah Owned by: AlexGhitza
Priority: major Milestone: sage-duplicate/invalid/wontfix
Component: basic arithmetic Keywords:
Cc: Work issues:
Report Upstream: N/A Reviewers: David Roe
Authors: Merged in:
Dependencies: Stopgaps:

Description (last modified by jdemeyer) (diff)

In sage-4.7.2, 

sage: F = GF(2)
sage: P.<x> = PolynomialRing(F)
sage: H.<h> = GF(2^8, name='h', modulus=x^3+x+1) # 2^8 rather than 2^3
sage:
sage: len(set([h^i for i in xrange(10000)]))
21

H is something - but it is not a field!

Fixed by #11784.

Change History

comment:1 Changed 19 months ago by lftabera

This is a duplicate of #11784 that needs review :)

comment:2 Changed 12 months ago by roed

  • Status changed from new to needs_review

comment:3 Changed 12 months ago by roed

  • Status changed from needs_review to positive_review
  • Milestone changed from sage-5.1 to sage-duplicate/invalid/wontfix

comment:4 Changed 12 months ago by jdemeyer

  • Status changed from positive_review to closed
  • Reviewers set to David Roe
  • Resolution set to duplicate
  • Description modified (diff)
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