MathOverflow

Good Question

 Good Question
Question score of 25 or more. This badge can be awarded multiple times.
Awarded 4486 times.
Relative De Rham cohomologies
Awarded Mar 27, 2020 at 23:00
Is a symplectic camel actually prohibited from passing through the eye of a needle?
Awarded Mar 27, 2020 at 19:55
Is there a syntactic characterization for BPP, BQP, or QMA?
Awarded Mar 26, 2020 at 12:10
Generalizations of the Birkhoff-von Neumann Theorem
Awarded Mar 25, 2020 at 9:25
What "metatheory" did early set theory/logic researchers use to prove semantic results?
Awarded Mar 24, 2020 at 9:35
Freyd-Mitchell's embedding theorem
Awarded Mar 23, 2020 at 11:15
When does a Galois connection induce a topology?
Awarded Mar 21, 2020 at 18:50
geometric interpretation of Lie bracket
Awarded Mar 21, 2020 at 0:55
Where to submit this work with several unusual features?
Awarded Mar 20, 2020 at 15:55
Some models for random graphs that I am curious about
Awarded Mar 17, 2020 at 10:55
Avoiding Minkowski's theorem in algebraic number theory.
Awarded Mar 16, 2020 at 15:45
Countable connected Hausdorff space
Awarded Mar 13, 2020 at 11:00
Unital $C^{*}$ algebras whose all elements have path connected spectrum
Awarded Mar 12, 2020 at 22:35
Multiplying all the elements in a group
Awarded Mar 10, 2020 at 22:00
How and when do I learn so much mathematics?
Awarded Mar 10, 2020 at 18:50
Pros and cons of specializing in an esoteric research area
Awarded Mar 9, 2020 at 20:45
Is there a 'nice' interpretation of virtual representations?
Awarded Mar 9, 2020 at 15:45
Atlas-like websites on specific areas of mathematics
Awarded Mar 7, 2020 at 14:10
How are these two ways of thinking about the cross product related?
Awarded Mar 3, 2020 at 22:15
Euler characteristic and universal cover
Awarded Feb 29, 2020 at 23:00
Which sets of roots of unity give a polynomial with nonnegative coefficients?
Awarded Feb 29, 2020 at 19:00
How fast are a ruler and compass?
Awarded Feb 28, 2020 at 4:15
Linear combination of sine and cosine
Awarded Feb 27, 2020 at 22:35
Proof for the derivative of the determinant of a matrix [closed]
Awarded Feb 27, 2020 at 7:50
Failure of smoothing theory for topological 4-manifolds
Awarded Feb 26, 2020 at 17:45
Fundamental group of a topological pullback
Awarded Feb 25, 2020 at 0:30
Mathematical foundations of Quantum Field Theory
Awarded Feb 23, 2020 at 10:05
Existence of a strange measure
Awarded Feb 21, 2020 at 9:40
A counterexample for Sard's theorem in $C^1$ regularity
Awarded Feb 19, 2020 at 1:30
Do two integral matrices generate a free group?
Awarded Feb 18, 2020 at 2:30
About the Riemann integrability of composite functions
Awarded Feb 17, 2020 at 1:35
Classification of 1-dimensional manifolds (not second-countable)
Awarded Feb 16, 2020 at 19:55
Fermat's Last Theorem for integer matrices
Awarded Feb 15, 2020 at 8:50
Recent claim that inaccessibles are inconsistent with ZF
Awarded Feb 14, 2020 at 12:45
Why are we interested in permutahedra, associahedra, cyclohedra, ...?
Awarded Feb 12, 2020 at 23:45
Why is the Fourier transform so ubiquitous?
Awarded Feb 12, 2020 at 19:05
When does Lusztig's canonical basis have non-positive structure coefficients?
Awarded Feb 11, 2020 at 21:15
Smoothness of distance function in Riemannian Manifolds
Awarded Feb 11, 2020 at 2:15
Theorems first published in textbooks?
Awarded Feb 10, 2020 at 20:20
Geometry meaning of higher cohomology of sheaves?
Awarded Feb 10, 2020 at 16:45
Nontrivially fillable gaps in published proofs of major theorems
Awarded Feb 9, 2020 at 14:35
What's a non-abelian totally ordered group?
Awarded Feb 9, 2020 at 11:45
(post deleted or otherwise unavailable)
Awarded Feb 8, 2020 at 4:25
Conceptual algebraic proof that Grassmannian is closed in Plucker embedding
Awarded Feb 6, 2020 at 6:30
Is there any holomorphic version of the tubular neighborhood theorem?
Awarded Feb 5, 2020 at 19:10
Extent of “unscientific”, and of wrong, papers in research mathematics
Awarded Feb 2, 2020 at 1:25
Quick proof of the fact that the ring of integers of $\mathbb Q(\zeta_n)$ is $\mathbb Z[\zeta_n]$?
Awarded Feb 1, 2020 at 10:25
Modern survey of unstable homotopy groups?
Awarded Jan 29, 2020 at 20:50
Complex analytic vs algebraic geometry
Awarded Jan 28, 2020 at 3:15
What percentage of published mathematics papers are correct?
Awarded Jan 25, 2020 at 14:45
Composite pairs of the form n!-1 and n!+1
Awarded Jan 24, 2020 at 21:10
Fermat's Last Theorem for Gaussian Integers ( excluding $\mathbb{Z}$ or $i\mathbb{Z}$ )
Awarded Jan 24, 2020 at 9:00
Any real contribution of functional analysis to quantum theory as a branch of physics?
Awarded Jan 18, 2020 at 12:50
Direct proof of irrationality?
Awarded Jan 16, 2020 at 22:40
Are the mapping class groups of manifolds finitely presentable?
Awarded Jan 16, 2020 at 17:20
Incorrect information in an old article about the Kervaire invariant
Awarded Jan 12, 2020 at 4:01
Milnor's cartography problem
Awarded Jan 11, 2020 at 9:50
Zeros of Gradient of Positive Polynomials.
Awarded Jan 10, 2020 at 7:40
How can classifying irreducible representations be a "wild" problem?
Awarded Jan 9, 2020 at 14:50
Expressing the Riemann Zeta function in terms of GCD and LCM
Awarded Jan 5, 2020 at 17:15
1
…
19 20
21
22 23
…
75