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F. C.'s user avatar
F. C.'s user avatar
F. C.
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Embeddings between $p$-adic linear groups?
revised
Embeddings between $p$-adic linear groups?
improved formatting in title
revised
indecomposable modules of gentle algebras
fix typo in link
revised
is this a modular form of some kind?
added a picture of the complex function F
answered
What does "trait" mean?
revised
$q$-analogs of total positivity
added the tag q-analogs
awarded
 Yearling
comment
Classification of fibrations $\Bbb S^k\longrightarrow\Bbb S^d\longrightarrow B$
A related reference is Ovsienko-Tabachnikov article on Hopf Fibrations and Hurwitz-Radon Numbers (ovsienko.perso.math.cnrs.fr/Publis/Hopf1.pdf).
revised
Remaining models conjectured to converge to SLE(6) or CLE(6)
add one link
comment
Generating uniformly distributed trees
Search for "Boltzmann sampling" for some approximate algorithms.
revised
Presentation of the Rybnikov matroid
added the tag matroid-theory
comment
Motivic strong bellows conjecture
I have seen somewhere a conjecture about the invariance of the full spectrum of the Laplacian in this context. This would imply the known invariance of the volume.
revised
Rough conjecture about eigenvalues of Maass forms
added the tag modular-forms
revised
Matrix of cosecants appearing in equivariant index computations
added 108 characters in body
comment
On the determinant $\det[\sec2\pi\frac{jk}p]_{0\le j,k\le(p-1)/2}$
And for the original question, one gets $[1, 1, 1, 19, 67, 5084, 3756652, 34907699, 109337677693,\dots]$.
comment
On the determinant $\det[\sec2\pi\frac{jk}p]_{0\le j,k\le(p-1)/2}$
It seems that the squares of the matrices have coefficients in $\mathbb{Z}$.
comment
On the determinant $\det[\sec2\pi\frac{jk}p]_{0\le j,k\le(p-1)/2}$
And for the previous one, one gets $[1, 1, 2, 3, 9, 32, 95, 402, 9408, 40672, 1174257, 6844400, 41323172, 418892388, \dots]$.
comment
On the determinant $\det[\sec2\pi\frac{jk}p]_{0\le j,k\le(p-1)/2}$
For the last sequence, one gets $[1, 1, 0, 1, 1, 2, 1, 0, 8, 0, 37, 242, 844, 0, \dots]$.
comment
On the determinant $\det[\sec2\pi\frac{jk}p]_{0\le j,k\le(p-1)/2}$
Similar to mathoverflow.net/questions/331813
comment
Matrix of cosecants appearing in equivariant index computations
Looks similar to the question mathoverflow.net/questions/321162
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