35

Questions
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4
15
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8
answers
3k
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The first eigenvalue of a graph - what does it reflect?

oct 15 at 13:40 Dan Stahlke 73●6

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30
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4
answers
2k
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The maximum of a polynomial on the unit circle

aug 4 at 17:13 Alexandre Eremenko 10.6k●1●24●39

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16
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4
answers
869
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A mixing property for finite fields of characteristic $2$

aug 7 at 19:38 Seva 4,993●1●8●26

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17
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2
answers
805
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Erdős-Szekeres for first differences

mar 16 12 at 13:21 Seva 4,993●1●8●26

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13
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2
answers
766
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Arithmetic progressions in power sequences

oct 25 11 at 10:19 François Brunault 7,419●1●13●35

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8
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3
answers
757
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The largest eigenvalue of a “hyperbolic” matrix

oct 23 10 at 15:13 Qiaochu Yuan 38.4k●5●116●301

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14
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1
answer
715
views

How to keep subsets disjoint?

apr 12 11 at 6:10 Seva 4,993●1●8●26

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8
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1
answer
599
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Projecting the unit cube onto a (very special) subspace

jul 10 11 at 16:15 Seva 4,993●1●8●26

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6
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2
answers
591
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Is the operator norm always attained on a $\{0,1\}$-vector?

oct 12 10 at 12:00 Greg Kuperberg 36.3k●2●116●179

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8
votes
1
answer
533
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When does $P(a−b)=0$ for $a≠b$ ensure $P(0)=0$? (Continued.)

apr 20 11 at 14:22 MathOverflow♦ 1●2●3

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