#4739: [with patch, not ready for review] Add support for additive abelian
groups
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Reporter: cremona | Owner: tbd
Type: enhancement | Status: new
Priority: major | Milestone: sage-3.3
Component: algebra | Keywords: abelian group
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See also #1849 and #3999.
The patch adds code to the AbelianGroups_class so that additive groups can
be created, and are output with additive notation.
Further doctests are required to show examples of both additive and
multiplicative type in every case. Subgroup creation (which interfaces
with GAP) does not yet work.
As an example (more to come), torsion subgroups of elliptic curves over
number fields are now additive.
robertwb asked to have a look at this even though it is not yet finished,
so here it is!
NB I still think that the whole abelian group code needs rewriting (as was
started in #1849)!
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4739>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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