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First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.
Awarded 11695 times.
Mathematical solution for a two-player single-suit trick taking game?
Awarded Aug 1, 2018 at 21:00
Functorial Whitehead Tower?
Awarded Aug 1, 2018 at 21:00
Mayer-Vietoris homotopy groups sequence of a pull-back of a fibration
Awarded Aug 1, 2018 at 21:00
Do h-coequalizers and coproducts give all h-colimits?
Awarded Aug 1, 2018 at 21:00
Analogue to covering space for higher homotopy groups?
Awarded Aug 1, 2018 at 21:00
yoneda-embedding vs. dual vector space
Awarded Aug 1, 2018 at 21:00
Which commutative rigs arise from a distributive category?
Awarded Aug 1, 2018 at 21:00
Countable subgroups of compact groups
Awarded Aug 1, 2018 at 21:00
Can a topos ever be an abelian category?
Awarded Aug 1, 2018 at 21:00
K-theory as a generalized cohomology theory
Awarded Aug 1, 2018 at 21:00
$(2x^2+1)(2y^2+1)=4z^2+1$ has no positive integer solutions?
Awarded Aug 1, 2018 at 7:35
Definition of algebraic de Rham cohomology of non-smooth affine variety
Awarded Jul 30, 2018 at 16:45
Closed geodesics on constant positive Gauss curvature surfaces
Awarded Jul 30, 2018 at 12:05
Primes dividing $2^a+2^b-1$
Awarded Jul 29, 2018 at 16:25
Difficulties with descent data as homotopy limit of image of Čech nerve
Awarded Jul 28, 2018 at 5:45
Show that the rational cohomology ring $H^*(M;\mathbb{Q})$ needs at least two generators
Awarded Jul 27, 2018 at 10:02
Intersections in $\mathbb{P}^1\times\mathbb{P}^1$
Awarded Jul 26, 2018 at 17:40
Why are the coefficients of the modular equation so large?
Awarded Jul 26, 2018 at 17:40
Finite group representation as $\mathrm{Aut}(\Gamma)$ action $H^1(\Gamma,\mathbb{Z})$ of graph?
Awarded Jul 26, 2018 at 11:00
Can the Induction axiom in the Peano arithmetic be replaced by the irrationality of $\sqrt{2}$?
Awarded Jul 26, 2018 at 3:30
What are examples of non-equivalent virtualizations of a large cardinal?
Awarded Jul 25, 2018 at 21:40
What is known about global well ordering of classes in Gödel-Bernays?
Awarded Jul 25, 2018 at 19:40
Thom conjecture in CP3
Awarded Jul 25, 2018 at 12:40
Consistency strength of the existence of a transitive model of $\mathsf{ZFC}^-$ with a $\kappa$-complete ultrafilter
Awarded Jul 25, 2018 at 5:30
Existence of an antiderivative function on an arbitrary subset of $\mathbb{R}$
Awarded Jul 24, 2018 at 0:51
Differential equation changing sign almost everywhere
Awarded Jul 23, 2018 at 23:25
Obstruction of spin-c structure and the generalized Wu manifods
Awarded Jul 23, 2018 at 23:00
Which simplicial objects are Čech nerves?
Awarded Jul 23, 2018 at 1:19
Norm of $n$-linear symmetric forms
Awarded Jul 22, 2018 at 19:46
Prove that the matrix $[\Gamma(\lambda_{i}+\mu_{j})]$ is nonsingular
Awarded Jul 22, 2018 at 19:01
Is every complete Boolean algebra isomorphic to the quotient of a powerset algebra?
Awarded Jul 22, 2018 at 16:59
Degree of irreducible representations of a finite cyclic group over $\mathbb{Q}_p$
Awarded Jul 22, 2018 at 16:24
If $G$ is a paracompact topological group, then is $G \times G$ paracompact?
Awarded Jul 21, 2018 at 15:11
On the Large Cardinal Strength of Normal Moore Space Conjecture
Awarded Jul 21, 2018 at 4:52
Simple homotopy equivalent, non-homeomorphic manifolds
Awarded Jul 20, 2018 at 17:54
A reference to infinite version of the Sunflower Lemma
Awarded Jul 20, 2018 at 7:51
The Tall Tale of Terminating Transfinite Towers
Awarded Jul 19, 2018 at 19:08
Intuition behind the canonical projective resolution of a quiver representation
Awarded Jul 19, 2018 at 17:53
What is the modal logic of outer multiverse?
Awarded Jul 19, 2018 at 9:49
Homotopy theories of operads
Awarded Jul 19, 2018 at 9:23
Complex structures on a K3 surface as a hyperkähler manifold
Awarded Jul 18, 2018 at 13:05
Smooth sums of coprime smooth integers
Awarded Jul 17, 2018 at 17:15
Existence of imaginary quadratic fields of class numbers coprime to $p$ with prescribed splitting behaviour of $p$
Awarded Jul 17, 2018 at 17:15
Sum of divisors below threshold
Awarded Jul 17, 2018 at 17:15
Mordel's conjecture for function fields in positive characteristic
Awarded Jul 16, 2018 at 20:05
What does Faltings' theorem look like over function fields?
Awarded Jul 16, 2018 at 17:19
Who first chose the names Alice and Bob for players A and B?
Awarded Jul 16, 2018 at 17:02
Forcing and Family Contentions: Who wins the disputes?
Awarded Jul 15, 2018 at 18:25
A conjecture of Montesinos
Awarded Jul 13, 2018 at 20:40
Faltings theorem and number of singularities
Awarded Jul 13, 2018 at 10:32
Does a free action always induce a diffeomorphism?
Awarded Jul 13, 2018 at 9:02
Example of a ring with non-finitely generated unit group?
Awarded Jul 12, 2018 at 21:23
Subgroup lattice isomorphic to the power set lattice
Awarded Jul 12, 2018 at 11:54
Comparing Krein-Rutman theorem and Perron–Frobenius theorem
Awarded Jul 12, 2018 at 9:21
Centraliser of an absolute Galois group
Awarded Jul 11, 2018 at 23:17
A cube is placed inside another cube
Awarded Jul 11, 2018 at 15:23
Example of group cohomology not annihilated by exponent of $G$?
Awarded Jul 11, 2018 at 13:24
What is the history of the Y-combinator?
Awarded Jul 11, 2018 at 1:15
Relations between coefficients of expansions of a rational function at 0 and infinity
Awarded Jul 10, 2018 at 13:32
Reduced ring with all non-prime ideals finitely generated
Awarded Jul 10, 2018 at 11:06
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