Symmetry of the Petersen graph and cycle index
114242
permutation group and cycle index question regarding peterson graph
126060
Proving that a Euler Circuit has a even degree for every vertex
121130
Graph with even vertices and ${n-1}\choose 2$ $+ 1$ edges has a perfect matching
31626
proving that a graph is hamiltonian (Ore's theorem)
154841
Computing symmetry/combinatorial factor for a diagram in $\phi^4$ theory
48692
A problem about the graph theory
8458
Combinatorics problem based on Ferrers graph
91253
Proving that every graph that each vertex at degree 2 must contain a cycle
58081
Hamiltonian cycles in associahedron graphs
48397
Index of a sublattice in a lattice and a homomorphism between them
33373
Balanced orientation of infinite graphs
21568
Maximal order of an element in a symmetric group
113015
Eulerian Paths in a Complete Graph $K_5$
49193
Constructing a graph from a degree sequence
17268
Cycles in permutations of a given size
90747
Upper bound on $\chi(G)$ for a triangle-free graph
46841
When is a graph isomorphic to the source?