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Accepted answer and score of 40 or more. This badge can be awarded multiple times.
Awarded 969 times.
Intuition for Picard-Lefschetz formula
Awarded Dec 24, 2023 at 16:41
Groups that do not exist
Awarded Dec 19, 2023 at 8:48
Wanted: Positivity certificate for the AM-GM inequality in low dimension
Awarded Dec 18, 2023 at 9:33
If $2^x $and $3^x$ are integers, must $x$ be as well?
Awarded Dec 14, 2023 at 9:56
Topological Characterisation of the real line.
Awarded Dec 12, 2023 at 0:25
What is the most "concrete-feeling" equivalent formulation of the Continuum Hypothesis that you can think of?
Awarded Dec 4, 2023 at 6:19
Which popular games have been studied mathematically?
Awarded Nov 29, 2023 at 23:27
What are the implications of the new quasi-polynomial time solution for the Graph Isomorphism problem?
Awarded Nov 29, 2023 at 23:27
How and when do I learn so much mathematics?
Awarded Nov 25, 2023 at 8:47
de Rham vs Dolbeault Cohomology
Awarded Nov 23, 2023 at 3:21
How do you *state* the Classification of finite simple groups?
Awarded Nov 21, 2023 at 8:19
Why do I need densities in order to integrate on a non-orientable manifold?
Awarded Nov 19, 2023 at 13:20
How do the compact Hausdorff topologies sit in the lattice of all topologies on a set?
Awarded Nov 17, 2023 at 12:46
Non-diagonalizable complex symmetric matrix
Awarded Nov 9, 2023 at 15:45
Most elementary proof showing that exponential growth wins against polynomial growth
Awarded Nov 7, 2023 at 15:45
A challenging (for me) limit calculation
Awarded Oct 25, 2023 at 17:56
Is this equivalent to RH - Riemann hypothesis?
Awarded Oct 9, 2023 at 7:34
What axioms are used to prove Gödel's Incompleteness Theorems?
Awarded Oct 6, 2023 at 16:56
Understanding the application of two inequalities?
Awarded Oct 6, 2023 at 8:28
Are semi-direct products categorical (co)limits?
Awarded Oct 5, 2023 at 0:51
Undecidability in Conway's Game of Life
Awarded Oct 1, 2023 at 5:25
Early stabilization in the homotopy groups of spheres
Awarded Sep 28, 2023 at 13:35
Why is Set, and not Rel, so ubiquitous in mathematics?
Awarded Sep 26, 2023 at 9:16
Are the inner automorphisms the only ones that extend to every overgroup?
Awarded Sep 24, 2023 at 6:25
What is the simplest proof that the density of coprime pairs does not go to zero?
Awarded Sep 14, 2023 at 13:48
Who first characterized the real numbers as the unique complete ordered field?
Awarded Aug 24, 2023 at 5:48
Matsumura: "Commutative Algebra" versus "Commutative Ring Theory"
Awarded Aug 21, 2023 at 12:56
Does there exist a complete implementation of the Risch algorithm?
Awarded Aug 15, 2023 at 5:27
What is the crucial difference the Maynard/Tao approach and Goldston-Pintz-Yildirim that extends to prime k-tuples with $k>2$
Awarded Jul 9, 2023 at 7:21
Why are ring actions much harder to find than group actions?
Awarded Jun 16, 2023 at 1:16
A certain mathematical competition in the UK
Awarded Jun 14, 2023 at 14:12
Are there any fields of academic mathematics whose epistemic status as math is controversial within the academic community?
Awarded Jun 9, 2023 at 10:50
Ring-theoretic characterization of open affines?
Awarded Jun 2, 2023 at 13:35
Is the Invariant Subspace Problem interesting?
Awarded May 26, 2023 at 22:56
For a finite set A of positive reals, prove that the set A + A - A contains at least as many positive as negative elements
Awarded May 26, 2023 at 21:15
Exotic $R^4$ as the universal covering space
Awarded May 22, 2023 at 15:50
Clausen's modified Hodge Conjecture
Awarded May 19, 2023 at 14:31
Are infinite groups in which most elements have order $\leq 2$ commutative?
Awarded May 17, 2023 at 11:42
Is there a natural random process that is rigorously known to produce Zipf's law?
Awarded May 12, 2023 at 0:10
Largest number of vectors with pairwise negative dot product
Awarded May 10, 2023 at 12:17
How does Mathematica do symbolic integration?
Awarded May 9, 2023 at 12:04
Results with short, advanced proofs or long, elementary proofs
Awarded May 6, 2023 at 11:47
D-modules, deRham spaces and microlocalization
Awarded Apr 28, 2023 at 4:21
Is there anything special about the Riemann surface $y^2 = x(x^{10}+11x^5-1)$?
Awarded Apr 26, 2023 at 18:21
Do mathematicians rely on senses other than vision and hearing?
Awarded Mar 31, 2023 at 6:55
Cubical vs. simplicial singular homology
Awarded Mar 23, 2023 at 2:42
Distributing points evenly on a sphere
Awarded Mar 13, 2023 at 16:32
Computational complexity of computing homotopy groups of spheres
Awarded Mar 4, 2023 at 8:33
Why study Higher Sheaf Cohomology?
Awarded Feb 28, 2023 at 2:55
Has gnu(2048) been found?
Awarded Feb 14, 2023 at 0:57
Decision problems for which it is unknown whether they are decidable
Awarded Feb 13, 2023 at 9:02
Is there a natural measures on the space of measurable functions?
Awarded Jan 20, 2023 at 8:32
Zorn's lemma: old friend or historical relic?
Awarded Jan 6, 2023 at 22:19
Why hasn't mereology succeeded as an alternative to set theory?
Awarded Jan 6, 2023 at 13:05
Are there any Fibonacci numbers that are sandwiched between twin primes?
Awarded Jan 3, 2023 at 23:16
There is a nice theory of quadratic forms. How about cubic forms, quartic forms, quintic forms, ...?
Awarded Dec 30, 2022 at 13:31
What's your favorite equation, formula, identity or inequality?
Awarded Dec 22, 2022 at 14:31
Revisiting the unreasonable effectiveness of mathematics
Awarded Dec 19, 2022 at 13:55
Sources for BibTeX entries
Awarded Dec 16, 2022 at 19:01
Why is integer factoring hard while determining whether an integer is prime easy?
Awarded Dec 7, 2022 at 17:52
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