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Xin Zhang's user avatar
Xin Zhang's user avatar
Xin Zhang's user avatar
Xin Zhang
  • Member for 4 years, 5 months
  • Last seen more than a month ago
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question
12
Does there exist 2-planar graph with chromatic number 8 or 9 or 10
Nov 22, 2019
question
7
There is a 3-connected 5-regular simple $n$-vertex planar graph iff $n$ satisfies....?
Jul 21, 2020
question
7
Berge-Fulkerson conjecture --- the planar case
Aug 15, 2021
question
7
Disjoint perfect matchings in complete bipartite graph
Aug 28, 2021
question
6
Is there any maximal 1-planar or 2-planar graph that is not 3-connected
Jul 8, 2020
question
6
Generating 21-vertex 4-regular plane graphs with 8 faces of degree 3 and 15 faces of degree 4
Dec 18, 2023
question
5
Finding a special plane graph with some requirements on the faces
Aug 28, 2020
question
5
What is the crossing number of cube with a pair of crossing edges inside each face
Nov 8, 2020
answer
5
An edge coloring problem for class two graphs
Sep 27, 2021
question
4
What is the crossing number of dodecahedron with a copy of $K_5$ inside each face
Nov 8, 2020