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## Recent Questions

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### Bounding Roots of a Polynomial by Coefficients

10m ago MathOverflow 123
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### 3-edge-coloring of 3-regular multigraphs

19m ago Forest Tong 111
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### A natural refinement of the $A_n$ arrangement is to consider all $2^n-1$ hyperplanes given by the sums of the coordinate functions. Have you seen this arrangement? Is it completely intractable?

19m ago Erik Aas 14716
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20m ago Lyle 1
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### How did Hankel determinants get the name Hankel-Hadamard?

25m ago Carlo Beenakker 6,1691021
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42m ago Atif 331
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### Understanding the rationale behind “batch means” estimation

1h ago Karmic Mishap 1
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### Where did Sophus Lie write the group commutator for two one parameter groups.

1h ago Francois Ziegler 1,9571811
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### Local boundary symmetrisation of Riemannian metrics by coordinate changes

1h ago Anton Petrunin 16.6k42110
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2h ago Ken 311
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### What is Kirillov’s method good for?

2h ago Hassan Jolany 1,1801212
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### Irreducibility of the trinomial over Q

2h ago Rachel 111
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### what is the cyclic cover trick?

2h ago quid 13.6k3354
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### Lower Degree Elements in an Algebraic Number Field

2h ago quid 13.6k3354
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### Upper semicontinuity of Betti numbers of submodules

2h ago quid 13.6k3354
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### Aubin’s book - construction of Green’s function on compact manifold

2h ago macbeth 1,229614
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### Why is there no stack of $\ell$-adic sheaves on a curve?

2h ago Jacob Lurie 6,7742738
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### Numerical multivariate definite integration

3h ago Javier 112
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### totally disconnected and zero-dimensional spaces

3h ago Joseph Van Name 2,491514
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### Construction of an integral point set given the set of distances ,its minimal description so as to get a measure of its complexity and its unique identifier.

3h ago Joseph O'Rourke 44.1k150216
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### What new primitive recursive functions are needed to reconcile Turing time complexity with Godel time complexity?

3h ago Dan Turetsky 2054
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### Intersection of localization with finitely generated subalgebra of fraction field

3h ago David Speyer 56.3k3103242
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### Proper-class sized “ring” with no maximal ideals

3h ago François G. Dorais 23.2k252116
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### For any n and some prime p there is an elemnet in Zp* of order n [closed]

4h ago katz 1,279112
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### How many proofs that $\pi_n(S^n)=\mathbb{Z}$ are there?

4h ago Johannes Ebert 11.6k3356
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### Finite generation of the commutator subgroup of the pure braid group

4h ago Mark Sapir 28k257120
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### What makes the Cartier operator “tick”?

4h ago Dan Petersen 10.4k12246
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4h ago ayman 1
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### When an exact embedding of abelian categories induces a full embedding of their derived categories?

5h ago Leonid Positselski 6,89311636
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### Dominant morphism of Affine Scheme

5h ago John Stalfos 2914
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### Has the Fundamental Theorem of Algebra been proved using just fixed point theory? [closed]

5h ago Benjamin Dickman 2,0041624
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5h ago Sams 4778
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### local deformation functor of cuspidal curve

6h ago Stiger 111
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### Are there some numerical test to check if a map is a contraction?

6h ago Nicolas Essis-Breton 1214
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6h ago Frank 1
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### How can I understand the “groupoid” quotient of a group action as some sort of “product”?

6h ago Ronnie Brown 5,4962021
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7h ago Sams 4778
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### Morphsim from F_p[[X_1,…,X_d]].

7h ago Abhinav Kumar 1,819811
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### Are there any good websites for hosting discussions of mathematical papers?

7h ago Neil Strickland 14k12968
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### Which real analytic functions of two variables locally are magnitudes of complex-analytic functions

8h ago Dmitri Scheglov 834
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### Localisation in a quasi-category

8h ago Urs Schreiber 6,7351422
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### To what equal constant in the Gibbs lemma

8h ago Steven Landsburg 9,59312952
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### Group scheme over a DVR whose special fibre is the image of points under reduction mod p

8h ago A Stasinski 1,178610
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### Checking if a binary vector lies in the affine span of given binary vectors

9h ago Allen Knutson 12.9k12364
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### Smooth map to the stack of G-bundles

9h ago Jason Starr 1,935815
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### Is the dual of $A^1(\Omega)$ known for arbitrary domains ?

9h ago MathOverflow 123
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### Algorithm for Matrix Inverse in MATLAB [closed]

9h ago Nikhil Goyal 111