Skip to content

CircuitsMatroid: check for empty dict before min #41254

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
gmou3 wants to merge 1 commit into
base: develop
Choose a base branch
from
Open

CircuitsMatroid: check for empty dict before min #41254

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 5 additions & 0 deletions src/sage/matroids/circuits_matroid.pyx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -547,10 +547,15 @@ cdef class CircuitsMatroid(Matroid):
sage: M = CircuitsMatroid(matroids.CompleteGraphic(6))
sage: len(M.nonbases())
1707
sage: M = CircuitsMatroid(matroids.Uniform(5, 5))
sage: M.dependent_sets(3) # self._k_C is empty
SetSystem of 0 sets over 5 elements
"""
cdef int i
cdef set D_k = set()
cdef frozenset S
if not self._k_C:
return SetSystem(self._groundset)
for i in range(min(self._k_C), k + 1):
if i in self._k_C:
for S in self._k_C[i]:
Expand Down
Loading