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earned this badge 66 times.
Examples when quantum $q$ equals to arithmetic $q$
Awarded Mar 22 at 17:27
Coefficients when rewriting the Hook-Content polynomials in terms of binomial polynomials
Awarded Feb 3 at 16:27
Does a conditionally convergent sum with random signs converge almost surely?
Awarded Jan 16 at 22:19
Reference request: number of antichains of a partially ordered set
Awarded Dec 13, 2023 at 7:08
How many functions are there from a set to itself, up to isomorphism?
Awarded Dec 9, 2023 at 15:11
Homotopy type of the geometric realization of a poset
Awarded Jun 7, 2023 at 22:12
Situations where “naturally occurring” mathematical objects behave very differently from “typical” ones
Awarded Jun 6, 2023 at 15:35
Applications of super-mathematics to non-super mathematics
Awarded Mar 2, 2023 at 8:05
Your favorite surprising connections in mathematics
Awarded Oct 14, 2022 at 20:02
Generating function for counting partitions with corners
Awarded Aug 16, 2022 at 15:16
Important combinatorial and algebraic interpretations of the coefficients in the polynomial $[n]!_q = (1+q)(1+q+q^2) \ldots (1+q+\cdots + q^{n-1})$
Awarded Jun 9, 2022 at 12:51
Great polyhedra: What does "great" signify?
Awarded Apr 17, 2022 at 3:45
Modern results that are widely known, yet which at the time were ignored, not accepted or criticized
Awarded Feb 7, 2022 at 13:57
Bijective proof for a partition identity
Awarded Jan 13, 2022 at 6:57
How would you have answered Richard Feynman's challenge?
Awarded Dec 10, 2021 at 9:35
Results that are widely accepted but no proof has appeared
Awarded Nov 21, 2021 at 13:49
Lunch seminars for PhD students
Awarded Oct 18, 2021 at 1:35
Can the numerator in Weyl's character formula be written as a determinant?
Awarded Aug 8, 2021 at 10:41
Why is the sum of X-ray's of permutations linearly distributed?
Awarded Jul 31, 2021 at 23:10
Why are we interested in permutahedra, associahedra, cyclohedra, ...?
Awarded Jul 27, 2021 at 2:40
Who is Mrs. Gerber?
Awarded Jul 22, 2021 at 0:57
Changes forced by the pandemic
Awarded May 28, 2021 at 18:41
Proofs of theorems that proved more or deeper results than what was first supposed or stated as the corresponding theorem
Awarded Mar 8, 2021 at 5:12
Dimensions of $\frak{sl}_n$-representations
Awarded Mar 6, 2021 at 15:17
A meet-semilattice with top element that is not a lattice?
Awarded Dec 27, 2020 at 18:21
Seeking a combinatorial proof for the invariance of a $q$-series
Awarded Dec 27, 2020 at 18:21
What's a great christmas present for someone with a PhD in Mathematics?
Awarded Dec 12, 2020 at 0:25
Two questions on the permutohedron
Awarded Dec 1, 2020 at 4:50
Prominent non-mathematical work of mathematicians
Awarded Nov 28, 2020 at 9:32
A canonical bijection from linear independent vectors to parking functions
Awarded Nov 10, 2020 at 11:11
Is matroid realizability computable?
Awarded Oct 13, 2020 at 17:25
Is there Matrix-Tree theorem for counting the bases of a connected matroid?
Awarded Oct 6, 2020 at 6:25
PhD dissertations that solve an established open problem
Awarded Sep 30, 2020 at 10:51
Why does the number of permutations of $n-1$ adjacent transpositions where the outputs are different equal $2^{n-2}$?
Awarded Sep 30, 2020 at 6:15
Independent evidence for the classification of topological 4-manifolds?
Awarded Sep 5, 2020 at 16:02
Time-saving (technology) tricks for writing papers
Awarded Jul 13, 2020 at 17:26
Every mathematician has only a few tricks
Awarded Jun 16, 2020 at 14:20
What is the amplituhedron?
Awarded Feb 3, 2020 at 4:00
Mathematicians with both “very abstract” and “very applied” achievements
Awarded Jan 1, 2020 at 12:35
Updates to Stanley's 1999 survey of positivity problems in algebraic combinatorics?
Awarded Dec 31, 2019 at 18:10
Modeling in pure math
Awarded Dec 18, 2019 at 8:50
What are examples of (collections of) papers which "close" a field?
Awarded Dec 6, 2019 at 14:30
Decision problems for which it is unknown whether they are decidable
Awarded Nov 7, 2019 at 8:50
Explanatory vs Non-explanatory Proofs
Awarded Nov 6, 2019 at 8:05
Enumerating all permutations that are "square roots" of derangements
Awarded Sep 28, 2019 at 6:10
Why doesn't mathematics collapse even though humans quite often make mistakes in their proofs?
Awarded Aug 19, 2019 at 15:10
Important open problems that have already been reduced to a finite but infeasible amount of computation
Awarded Aug 18, 2019 at 15:05
Reference request: Grassmannian and Plucker coordinates in type B, C, D
Awarded Jul 12, 2019 at 17:25
Theorems that impeded progress
Awarded Apr 15, 2019 at 15:45
Theorems that impeded progress
Awarded Apr 5, 2019 at 13:00
Integer but not Laurent sequences
Awarded Mar 2, 2019 at 18:10
Open questions about posets
Awarded Feb 8, 2019 at 11:50
Open questions about posets
Awarded Feb 7, 2019 at 7:40
Open questions about posets
Awarded Feb 6, 2019 at 21:25
Noteworthy, but not so famous conjectures resolved recent years
Awarded Feb 3, 2019 at 5:00
What definitions were crucial to further understanding?
Awarded Dec 4, 2018 at 20:40
"Strange" proofs of existence theorems
Awarded Oct 10, 2018 at 23:35
About the definition of E8, and Rosenfeld's "Geometry of Lie groups"
Awarded Aug 21, 2018 at 7:35
Which popular games have been studied mathematically?
Awarded Jan 11, 2018 at 4:19
Fascinating moments: equivalent mathematical discoveries
Awarded Jun 1, 2017 at 8:19
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