Opened 11 years ago

Last modified 10 years ago

#12007 closed defect

creation of extension field of finite field needs more parameter checking — at Initial Version

Reported by: Mariah Lennox Owned by: Alex Ghitza
Priority: major Milestone: sage-duplicate/invalid/wontfix
Component: basic arithmetic Keywords:
Cc: Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

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Description

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!

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