#5332: Convert MV polynomial constructors in multi_polynomial_ideal.py,
category_object.py, etc
-------------------------+-------------------------------------------------
Reporter: | Owner: mabshoff
mabshoff | Status: needs_review
Type: | Milestone: sage-6.7
enhancement | Resolution:
Priority: | Merged in:
trivial | Reviewers:
Component: | Work issues:
documentation | Commit:
Keywords: | be20eb88e7e55711cd67cea4a7848043eb11e92d
Authors: Marc | Stopgaps:
Mezzarobba |
Report Upstream: N/A |
Branch: |
public/5332 |
Dependencies: |
-------------------------+-------------------------------------------------
Comment (by mmezzarobba):
* I'm wondering why you made this change:
{{{
--- a/src/sage/rings/polynomial/polynomial_element.pyx
+++ b/src/sage/rings/polynomial/polynomial_element.pyx
@@ -181,8 +181,12 @@ cdef class Polynomial(CommutativeAlgebraElement):
EXAMPLE::
- sage: R.<y> = QQ['y']
- sage: S.<x> = R['x']
+ sage: R = QQ['x']['y']
+ sage: R
+ Univariate Polynomial Ring in y over Univariate Polynomial Ring
in x
+ over Rational Field
+ sage: y = R.gen()
+ sage: x = R.base_ring().gen()
sage: f = x*y; f
y*x
sage: type(f)
}}}
* Does this work? How?
{{{
--- a/src/sage/schemes/generic/algebraic_scheme.py
+++ b/src/sage/schemes/generic/algebraic_scheme.py
@@ -194,7 +194,7 @@ def is_AlgebraicScheme(x):
We create a more complicated closed subscheme::
- sage: A, x = AffineSpace(10, QQ).objgens()
+ sage: A = AffineSpace(10, QQ)
sage: X = A.subscheme([sum(x)]); X
Closed subscheme of Affine Space of dimension 10 over Rational
Field defined by:
x0 + x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9
}}}
* Shouldn't `>>` be `>` here? Also, I would add a mention of `.<>` without
removing that of `objgens()`.
{{{
The third argument specifies the printing names of the generators
-of the homogenous coordinate ring. Using objgens() you can obtain
-both the space and the generators as ready to use variables.
+of the homogenous coordinate ring. Using the special syntax with
+``<`` and ``>>`` you can obtain both the space and the generators as
ready to
+use variables.
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/5332#comment:26>
Sage <http://www.sagemath.org>
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