#8383: Make symbolic versions of moebius, sigma, and euler_phi functions
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Reporter: zimmerma | Owner: burcin
Type: enhancement | Status: new
Priority: minor | Milestone: sage-5.6
Component: symbolics | Resolution:
Keywords: beginner | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by benjaminfjones):
Hi, thanks for working on this!
One solution (this is one I'm using on #4102), is to write a wrapper
function `sigma` that will take either one or two arguments and return the
general symbolic function of two arguments accordingly:
{{{
sage: sigma(5)
symbolic_sigma(5, 1)
sage: sigma(x, 2)
symbolic_sigma(x, 2)
}}}
The symbolic function `symbolic_sigma` would inherit from
`BuiltinFunction` and have two arguments. It's printed name could be just
`sigma` instead of `symbolic_sigma` to lessen confusion.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8383#comment:14>
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