polynomial interface improvements

[burcin]

Attached patch makes the following changes to improve the user interface of the polynomial classes:

• Remove .name() method, since .variable_name() already provides same functionality.
• make the .degree() function of univariate polynomials accept one argument,
  the generator, to be consistent with the .degree() of multivariate
  polynomials.
• Add an .is_monomial() method to univariate polynomials.

Component: basic arithmetic

Issue created by migration from https://trac.sagemath.org/ticket/4522

[burcin]

comment:1

One more change I forgot to specify above:

• make the .polynomial() function of univariate polynomials behave the same way as that of multivariate polynomials. (I.e., return a univariate polynomial with a coefficient ring in the rest of the generators of the same parent, which simply means returning self in this case.)

[williamstein]

comment:2

REFEREE REPORT:

This looks very good. Positive review subject to you posting an additional patch that puts the name method back in and has a deprecation warning with a doctest of this. We'll delete that in a few months.

[williamstein]

comment:3

Oh yes, by the way, I doctested all of the rings directory after this patch and it works 100%.

[burcin]

Attachment: trac_4522-polynomial_interface.patch.gz

make the interface of polynomials more consistent

[burcin]

comment:4

New version of the patch with the deprecation warning, and doctests for it.

I'm marking this positivie review, since William didn't state that he wanted to see the patch again. :)

[sagetrac-mabshoff]

comment:5

Merged in Sage 3.2.1.rc0