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Top Questions
15
votes
Is the two-color leapfrog problem in P?
complexity-theory
turing-machines
asked Jun 24, 2020 at 8:51
cs.stackexchange.com
11
votes
Can you win the monochromatic urn game?
combinatorics
graph-theory
computational-complexity
combinatorial-game-theory
matching-theory
asked Jul 13, 2020 at 9:49
math.stackexchange.com
11
votes
Optimal strategy for river crossing game
optimization
recreational-mathematics
combinatorial-game-theory
asked Jan 12 at 12:04
math.stackexchange.com
11
votes
Jacobian of (f,g) is identically zero if and only if f = h ∘ g?
derivatives
vector-analysis
jacobian
asked Jun 21, 2017 at 6:55
math.stackexchange.com
10
votes
Can you win the urn depletion game?
combinatorics
computational-complexity
combinatorial-game-theory
np-complete
asked Jun 20, 2020 at 6:54
math.stackexchange.com
10
votes
Finite group of "linear substitutions"
linear-algebra
group-theory
differential-equations
linear-transformations
asked Jun 18, 2017 at 19:33
math.stackexchange.com
9
votes
Is the leapfrog automata problem in P?
complexity-theory
turing-machines
asked Jun 16, 2020 at 1:27
cs.stackexchange.com
8
votes
Conjecture: a half of a pairing context-free language must be a regular language
regular-languages
context-free
open-problem
asked May 6 at 2:05
cs.stackexchange.com
8
votes
Optimal way to stack deck against uniformly random opponent?
probability
game-theory
card-games
asked Feb 25, 2019 at 4:53
math.stackexchange.com
8
votes
Finding the image in an elliptic mirror
geometry
conic-sections
asked Jun 24, 2019 at 7:19
math.stackexchange.com
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Top Answers
38
"In a circle of 33, the next 10 people on my right are all liars"
math.stackexchange.com
34
Why is a discrete topology called a discrete topology?
math.stackexchange.com
26
Why is the fundamental group of the plane with two holes non-abelian?
math.stackexchange.com
20
How do you minimize "hinge-loss"?
math.stackexchange.com
17
Example of a countable compact set in the real numbers
math.stackexchange.com
16
Is $1+1 = 2$ true in any base?
math.stackexchange.com
14
Average area of the shadow of a convex shape
math.stackexchange.com
13
How do you differentiate a matrix equation with respect to a vector?
math.stackexchange.com
12
Counting: how many ways of climbing a stair?
math.stackexchange.com
12
Why is a strictly monotonic mapping between intervals continuous?
math.stackexchange.com
12
Sequentially continuous implies continuous
math.stackexchange.com
12
In a Cayley table, which Group axioms fail when an entry appears twice in a row or a column?
math.stackexchange.com
12
Span of a subset of a vector space is the smallest subspace containing that set
math.stackexchange.com
12
Show that this ring has no identity.
math.stackexchange.com
11
For which integers $a,b,c,d$ does $\frac{a}{b}+\frac{c}{d} = \frac{a+c}{b+d}$?
math.stackexchange.com
10
Show that if $H$ is a subgroup of $S_n$, then either every member of $H$
math.stackexchange.com
10
Is it always possible to inscribe an equilateral triangle in a closed loop?
math.stackexchange.com
10
If I am 80% sure, is there an 80% chance that I'm right?
math.stackexchange.com
9
About two space with infinite circles.
math.stackexchange.com
9
Why is the empty set in the standard topology?
math.stackexchange.com
8
How do we check $x ≠ y$ in $PDA$ for $L = \{xy | x, y \in (0 + 1)^*, |x| = |y|, x ≠ y\}?$
cs.stackexchange.com
8
Push forward or differential : is there a link with the differential of a function?
math.stackexchange.com
7
$\sin(\cos(\sin(\cos(\sin(\cos \cdots \sin(\cos x)))))))\cdots))))$
math.stackexchange.com
7
Why Does the Definition of a Topology via Neighborhoods Include This Axiom
math.stackexchange.com
7
Flipping a set of unfair coins
math.stackexchange.com
7
What is the probability that a red ball is chosen before the black ball?
math.stackexchange.com
7
Why is an uncountable union of null sets not necessarily a null set?
math.stackexchange.com
7
Create all numbers from 1-100 using 1,3,3,6
puzzling.stackexchange.com
7
Formal definition of “counterexample”.
math.stackexchange.com
6
Problem with functor Sym and Ord
math.stackexchange.com
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