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181
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93
Famous mathematical quotes
Nov 29 '09 at 22:54
26
The Matrix-Tree Theorem without the matrix
Aug 22 '11 at 12:18
23
A good book of functional analysis
Aug 9 '11 at 1:30
19
Which graphs have incidence matrices of full rank?
Nov 15 '09 at 14:54
17
Are these three different notions of a graph Laplacian?
Nov 29 '14 at 4:26
17
Are there any books that take a 'theorems as problems' approach?
Jan 24 '10 at 20:07
15
When the Lovász theta-function saturates its upper bound
Nov 18 '10 at 22:20
15
Beginning a sentence with a mathematical symbol
May 15 '10 at 23:00
14
When (if ever) disclose your identity as a reviewer?
May 29 '12 at 23:03
14
roots of polynomials outside the unit disc
Jun 6 '11 at 17:24
14
code that produces all possible trees with n nodes.
Jan 18 '11 at 2:58
12
Transitive permutation groups which all of their proper subgroups are intransitive
Apr 14 at 20:55
12
Non-enumerative proof that there are many derangements?
Jan 20 '12 at 0:27
12
Cayley graphs and its subgraphs
Jan 4 '12 at 19:10
12
Good combinatorics textbooks for teaching undergraduates?
Jun 22 '10 at 19:53
11
Endomorphisms and almost all graphs
Dec 14 '14 at 17:13
11
The line graphs of complete graphs and Cayley graphs
Dec 3 '13 at 21:23
11
Vertex transitive graphs
Apr 1 '12 at 21:53
11
p-groups as Sylow subgroups
Feb 7 '11 at 14:30
10
Eigenvalues of the sum of a diagonal and a unit matrix
Jun 16 '11 at 12:17
10
Singular value decomposition over finite fields?
Nov 28 '09 at 1:38
10
How to write math well?
Oct 29 '09 at 2:37
9
Realizing a monoid as $\mathrm{End}(G)$ for some graph $G$
Nov 27 '14 at 12:22
9
Spectral graph theory: Interpretability of eigenvalues and -vectors
May 17 '10 at 12:09
9
Eigenvalues of Symmetric Tridiagonal Matrices
May 23 '13 at 1:17
9
Adjacency matrices of graphs
Jan 17 '11 at 13:57
9
Properties of Graphs with an eigenvalue of -1 (adjacency matrix)?
Mar 17 '10 at 2:11
8
A criterion for rooted trees to be isomorphic based on walks
Jan 12 at 13:39
8
When are the adjacency matrices of non-isomorphic graphs similar?
Mar 22 '15 at 13:40
8
Extended Hypercube Graph
Jun 7 '13 at 1:56
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