#20718: Simplicial complexes: consistently order faces when computing chain
complexes, homology
-------------------------------------+-------------------------------------
Reporter: jhpalmieri | Owner:
Type: enhancement | Status: needs_work
Priority: minor | Milestone: sage-7.3
Component: algebraic | Resolution:
topology | Merged in:
Keywords: days74 | Reviewers: Travis Scrimshaw
Authors: John Palmieri | Work issues:
Report Upstream: N/A | Commit:
Branch: | 6bd5a97d9e9a6a752eccc8d566b50d7c85c9c50f
u/jhpalmieri/homology_sorted | Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Changes (by vbraun):
* status: positive_review => needs_work
Comment:
{{{
sage -t src/sage/homology/simplicial_complex.py
**********************************************************************
File "src/sage/homology/simplicial_complex.py", line 1391, in
sage.homology.simplicial_complex.SimplicialComplex.n_cells
Failed example:
S = SimplicialComplex([[complex(i), complex(1)]], sort_facets=False)
Exception raised:
Traceback (most recent call last):
File "/home/release/Sage/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 498, in _run
self.compile_and_execute(example, compiler, test.globs)
File "/home/release/Sage/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 861, in compile_and_execute
exec(compiled, globs)
File "<doctest
sage.homology.simplicial_complex.SimplicialComplex.n_cells[6]>", line 1,
in <module>
S = SimplicialComplex([[complex(i), complex(Integer(1))]],
sort_facets=False)
File "/home/release/Sage/local/lib/python2.7/site-
packages/sage/homology/simplicial_complex.py", line 999, in __init__
vertices = tuple(range(vertex_set+1))
TypeError: can only concatenate list (not "int") to list
**********************************************************************
File "src/sage/homology/simplicial_complex.py", line 1392, in
sage.homology.simplicial_complex.SimplicialComplex.n_cells
Failed example:
S.n_cells(0)
Exception raised:
Traceback (most recent call last):
File "/home/release/Sage/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 498, in _run
self.compile_and_execute(example, compiler, test.globs)
File "/home/release/Sage/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 861, in compile_and_execute
exec(compiled, globs)
File "<doctest
sage.homology.simplicial_complex.SimplicialComplex.n_cells[7]>", line 1,
in <module>
S.n_cells(Integer(0))
File "sage/structure/parent.pyx", line 851, in
sage.structure.parent.Parent.__getattr__
(build/cythonized/sage/structure/parent.c:8117)
attr = getattr_from_other_class(self, self._category.parent_class,
name)
File "sage/structure/misc.pyx", line 253, in
sage.structure.misc.getattr_from_other_class
(build/cythonized/sage/structure/misc.c:1763)
raise dummy_attribute_error
AttributeError: 'Set_object_enumerated_with_category' object has no
attribute 'n_cells'
**********************************************************************
1 item had failures:
2 of 9 in sage.homology.simplicial_complex.SimplicialComplex.n_cells
[554 tests, 2 failures, 2.99 s]
----------------------------------------------------------------------
sage -t src/sage/homology/simplicial_complex.py # 2 doctests failed
----------------------------------------------------------------------
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/20718#comment:6>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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