#4483: Add coefficient_field() method to ModularSymbols/ModularForms
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Reporter: jonhanke | Owner: craigcitro
Type: enhancement | Status: new
Priority: minor | Milestone: sage-3.2.1
Component: modular forms | Keywords:
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## Define a newform (up to conjugation)
`time nf =
ModularSymbols(100,2,1).cuspidal_subspace().new_subspace().decomposition()[0]`
`nf.coefficient_field()` -- should return the field of definition of the
newform. (This appears to be accomplished with
`nf.eigenvalue(1).parent()`. It would be nice to know that this really
does give the field of definition.)
`nf.degree()` -- should return the degree of the coefficient field.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4483>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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