#14790: Python generator for free group variable names
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Reporter: dshurbert | Owner: joyner
Type: enhancement | Status: new
Priority: minor | Milestone: sage-5.11
Component: group theory | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Davis Shurbert | Merged in:
Dependencies: | Stopgaps:
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Description changed by dshurbert:
Old description:
> When creating free and finitely presented groups, default variable names
> are often ugly.
>
> {{{
> sage: F = FreeGroup(12)
> sage: F
> Free Group on generators {x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10,
> x11}
> sage: F/[F([1,2,2,1,1,4,7,-8]),F([10,10,4,-5,4,-8]) ]
> Finitely presented group < x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10,
> x11 | x0*x1^2*x0^2*x3*x6*x7^-1, x9^2*x3*x4^-1*x3*x7^-1 >
> }}}
>
> Created by a utility function, the simple generator in this patch
> provides an easy way to consistently generate better variable names, and
> will be useful in creating free groups algorithmically.
New description:
When creating free and finitely presented groups, default variable names
are often ugly.
{{{
sage: F = FreeGroup(12)
sage: F
Free Group on generators {x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10,
x11}
sage: F/[F([1,2,2,1,1,4,7,-8]),F([10,10,4,-5,4,-8]) ]
Finitely presented group < x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10,
x11 | x0*x1^2*x0^2*x3*x6*x7^-1, x9^2*x3*x4^-1*x3*x7^-1 >
}}}
Created by a utility function, the simple generator in this patch provides
an easy way to consistently generate better variable names, and will be
useful in creating free groups algorithmically.
__Apply__
* [attachment:trac_14790_fpg_names.patch]
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14790#comment:1>
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