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# Questions

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### A double grading of catalan numbers

31m ago F Castillo 1

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2
372
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### If a $d \log$ form is exact, is it zero?

may 10 at 16:59 Will Sawin 18.7k12448

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### Can I compute the cohomology of the complement of a log canonical divisor as if it were normal crossings?

apr 10 at 16:36 David Speyer 55.4k3102237

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### Hamiltonians which commute both as operators and as connections

dec 6 at 16:01 Austen 19217

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### Arithmetic progressions without small primes

nov 16 at 17:33 Stopple 2,645417

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360
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### Are the only local minima of $\angle(v, Av)$ the eigenvectors?

nov 13 at 18:24 Mark Meckes 5,982831

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### What is Lagrange Inversion good for?

oct 1 at 3:16 Tom Copeland 805520

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278
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### Computing determinants of matrices of linear forms

aug 13 at 23:20 David Speyer 55.4k3102237

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0
212
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### Does probability of a derangement go up under passing to subgroups? [closed]

jul 24 at 15:54 David Speyer 55.4k3102237

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