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j0equ1nn
  • Member for 12 years, 7 months
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25 votes
2 answers
1k views

Is there a database somewhere for sharing translations of mathematical works?

25 votes
1 answer
2k views

history of quaternion algebras

20 votes
1 answer
1k views

What was a "cusp" to Hurwitz in 1892?

15 votes
2 answers
7k views

Is there a standard notation for off-diagonal transpose?

13 votes
3 answers
470 views

Origin of number theoretic invariants associated to hyperbolic 3-manifolds

8 votes
2 answers
314 views

What is the most efficient way to factor a matrix into a given set of generators?

6 votes
1 answer
328 views

Compact hyperbolic 3-manifolds with prescribed quaternion algebra, quaternion parameters as ramification condition

6 votes
3 answers
579 views

For an arithmetic hyperbolic 3-manifold group, when is its trace field not its invariant trace field?

6 votes
1 answer
213 views

Does the Cayley-Dickson construction preserve isomorphism of quaternion algebras?

6 votes
1 answer
374 views

Computing algebraic properties of trace fields, as given by SnapPy

6 votes
1 answer
215 views

Current interest in geometric properties of Hilbert fundamental domains

6 votes
0 answers
706 views

"Introduction" to ... am I an idiot? [this question is about general math studying practices and not a particular problem] [closed]

6 votes
2 answers
2k views

Ramified quaternion algebras

5 votes
1 answer
488 views

How can we explicitly verify a canonical Dirichlet domain for this hyperbolic punctured torus

5 votes
2 answers
341 views

Conjugate transpose and discreteness, for Kleinian groups

5 votes
0 answers
207 views

Dirichlet domain for a Hilbert modular variety

4 votes
1 answer
197 views

Trace field of a hyperbolic $3$-manifold with a totally geodesic subsurface

4 votes
1 answer
260 views

How many quadratic fields occur as trace fields of hyperbolic knot complements?

4 votes
1 answer
278 views

What happens if we generalize the fundamental group to make knotted loops distinct?

4 votes
1 answer
445 views

How non-planar is the Math Genealogy Project graph? [closed]

4 votes
2 answers
249 views

How should we define $\mathrm{PSL}_2$ of a Clifford group?

4 votes
0 answers
123 views

How to enumerate a discrete group of matrices by their Frobenius norm?

3 votes
1 answer
277 views

How many non-commensurable non-arithmetic manifolds have a quaternion algebra like this?

3 votes
1 answer
677 views

What does the trace of a loxodromic Mobius transformation tell us about how it rotates?

3 votes
2 answers
489 views

Where can I find a translation of Caspar Wessel's "Om directionens analytiske betegning?"

3 votes
2 answers
503 views

An expression with an alternating trilinear form, written in terms of the determinant and a symmetric bilinear form

3 votes
3 answers
3k views

Basic arithmetic behind ramification in quadratic number fields

3 votes
0 answers
230 views

Pairs of non-isometric subsurfaces of a hyperbolic 3-manifold, with the same genus

2 votes
1 answer
192 views

Frohman & Fine's proof about Bianchi groups as HNN extensions (or anyone else's)

2 votes
1 answer
223 views

Why do noncocompact arithmetic Kleinian groups have quadratic trace fields?