User user6818 - MathOverflow

user6818

Member for 8 years, 10 months
Last seen more than 6 years ago

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Notable Question

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Nov 23
Yearling

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Jul 5

19

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Tumbleweed

Sep 9, 2013
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Aug 28, 2013
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Apr 20, 2015

Top tags

spectral-graph-theory

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21

Posts

40

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graph-theory

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sp.spectral-theory

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linear-algebra

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25

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rt.representation-theory

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matrices

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All Questions Answers

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13

What is a "Ramanujan Graph"?

Dec 25, 2014

11

Are these three different notions of a graph Laplacian?

Nov 28, 2014

10

What is a branched Riemann surface with cuts?

Jul 5, 2013

9

Is there a ``Ladner's Theorem" for the PH-vs-PSPACE scenario?

Mar 4, 2015

8

Are there exactly solvable CFTs?

Oct 13, 2013

7

When are (Abelian) Cayley graphs also expanders?

Mar 8, 2015

7

Constructing Ramanujan graphs from elliptic curves

Mar 8, 2015

7

What methods do we have to understand the spectrum of matrices with restricted entries?

May 21, 2015

6

Do perfect matching(s) have signatures in the graph eigenvalues?

Dec 5, 2014

5

Matching polynomials and Ramanujan graphs

Feb 5, 2015

Top network posts

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29

How does Mathematica understand branchcuts of the complex logarithm?

23

Are old (>35) faculty candidates discriminated against all over the world?

20

What is the definition of a "UV-complete" theory?

20

I believe my advisor doesn't think I am smart. How should I deal with this?

17

Isn't gravity non-local and non-causal?