#15300: Weyl and Clifford Algebras
-------------------------------------+-------------------------------------
Reporter: tscrim | Owner: tscrim
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.4
Component: algebra | Resolution:
Keywords: days54 | Merged in:
Authors: Travis Scrimshaw | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
public/algebras/weyl_clifford-15300| b47af6ae9f8dd1e6d870ec986f81fb6913d12e16
Dependencies: #16037 | Stopgaps:
-------------------------------------+-------------------------------------
Comment (by jhpalmieri):
When do I need to do `dx,dy,dz = sorted(W.differentials(), key=str)` vs.
`dx,dy,dz = W.differentials()`? There are examples of both sorts; is the
second version ever safe? I've seen in my own testing that the `variables`
method can return its elements in a random order, not necessarily
alphabetical. Will the same happen with `differentials` or
`algebra_generators`? It's nice that `W.inject_variables()` works well;
maybe that should be advertised, or at least used in some examples.
When does `_coerce_map_from_` return a map and not just True or False?
Please add more explanation and an example.
A few small changes:
{{{
#!diff
diff --git a/src/sage/algebras/weyl_algebra.py
b/src/sage/algebras/weyl_algebra.py
index 22300d9..8c256a0 100644
--- a/src/sage/algebras/weyl_algebra.py
+++ b/src/sage/algebras/weyl_algebra.py
@@ -502,7 +502,7 @@ class DifferentialWeylAlgebra(Algebra,
UniqueRepresentation):
- ``R`` -- a (polynomial) ring
- ``names`` -- (default: ``None``) if ``None`` and ``R`` is a
- polynomial ring, then consider the variable names corrspond to
+ polynomial ring, then the variable names correspond to
those of ``R``; otherwise if ``names`` is specified, then ``R``
is the base ring
@@ -577,7 +577,7 @@ class DifferentialWeylAlgebra(Algebra,
UniqueRepresentation):
def _element_constructor_(self, x):
"""
- Construct and element of ``self`` from ``x``.
+ Construct an element of ``self`` from ``x``.
EXAMPLES::
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/15300#comment:141>
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