1031 questions

distance between two graphs embedded in 2D

• graphs
• graph-theory
• laplacian

350

views

2

answers

1

vote

2026-02-23 09:54:09 +0200 Max Alekseyev

I am trying to draw graphs of the following type: W = Z . Z^0.5+3i in my Jupyter Notebook. I really don't see how to do it.

• graphic
• complex_plot

Algorithms for the $k$-admissible matching number of trees

• matching
• combinatorics
• algorithm
• graph-theory
• graph-algorithm

SageMath-x86_64.AppImage on Ubuntu 25.04

• AppImage
• jmol
• plot3d

Eigenvalues changing at only one position

Eigenvalues changing at only one position [closed]

Algorithm for listing minimal directed cuts and minimal dijoins

• directed-graphs
• algorithm

How to find the graph(s) with a perfect matching from the following collection whose adjacency spectral radius is maximum?

Test if a graph is vertex pancyclic

• graph
• graphtheory

Finding a spanning subgraph that satisfies a given condition

• graphtheory

Groebner basis computation extremely slow

• grobner-basis
• parallelization
• computation_time

834

views

1

answer

2

votes

2025-06-26 01:56:03 +0200 Max Alekseyev

How to find the graphs from the following collection whose adjacency spectral radius is maximum?

Action of symmetric group

• graphs
• symmetric_group
• group_action
• combinatorics

Check if a graph admits a separating 3-cycle.

• graph-theory

Restricted matchings in simplicial complexes or graphs

• combinatorics
• graphs

Find a minimum (A, B)-vertex separator

• graphtheory

Generating simplicial trees (equivalently, totally balanced hypergraphs) on $n$ vertices

• combinnatoric
• graph-theory
• hypergraphs
• algorithm
• SimplicialComplex

knot theory alternatives to sage?

• knot
• theory
• skein
• plot

608

views

2

answers

no

votes

2025-05-14 07:44:43 +0200 FrédéricC

Output of RootedTrees()

• OrderedTree
• combinatorics
• digraph
• output
• graph-algorithm

501

views

1

answer

1

vote

2025-05-07 19:54:46 +0200 Max Alekseyev

An error occurred while reading a graph in Plantri format.

• graphtheory

Determine whether a vertex lies on a cycle of given length

• graphtheory

210

views

1

answer

1

vote

2025-04-15 19:25:29 +0200 John Palmieri

Having trouble latex the crystal graph using sage, KeyError: 'node_1'?

• graphlatex

How to plot points of a finite plane?

• graphics
• Lines
• plot
• finite
• plane

Consider the class of simple connected bicyclic graphs on $10$ vertices. Let $A$ be the adjacency matrix of any such graph.

L-infinity norm in multivariable function

Inquiry About GSOC 2025: SageMath Project on Paths and Cycles Enumeration Methods

556

views

1

answer

1

vote

2025-03-06 22:21:16 +0200 Max Alekseyev

How to find the graphs from the following collection whose determinant is maximum?

plotting graphs, vertices on some graphs are very small

Test if a graph has a claw-decomposition

• graphtheory

How to plot this