#6835: Inconsistent types for degree of finite fields
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Reporter: cremona | Owner: tbd
Type: defect | Status: new
Priority: minor | Milestone: sage-4.1.2
Component: algebra | Keywords: finite field
Reviewer: | Author:
Merged: |
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Finite fields in Sage have 4 different types, depending on the
characteristic and degree. There is an inconsistency in the type of the
degree of the field:
{{{
sage: k = GF(2,'b'); type(k); type(k.degree())
<class 'sage.rings.finite_field_prime_modn.FiniteField_prime_modn'>
<type 'int'>
sage: k = GF(2^10,'b'); type(k); type(k.degree())
<type 'sage.rings.finite_field_givaro.FiniteField_givaro'>
<type 'sage.rings.integer.Integer'>
sage: k = GF(2^40,'b'); type(k); type(k.degree())
<type 'sage.rings.finite_field_ntl_gf2e.FiniteField_ntl_gf2e'>
<type 'sage.rings.integer.Integer'>
sage: k = GF(3^40,'b'); type(k); type(k.degree())
<class 'sage.rings.finite_field_ext_pari.FiniteField_ext_pari'>
<type 'int'>
}}}
i.e. in 2 of the 4 cases the degree is an int rather than an Integer.
Patch soon.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6835>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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