143

Answers
votes newest views recent
15
A single paper everyone should read?
13
Most interesting mathematics mistake?
23
What are your favorite instructional counterexamples?
9
What should be offered in undergraduate mathematics that’s currently not (or isn’t usually)?
9
Interesting applications of the Pigeon-hole Principle
2
f(f(x))=exp(x)-1 and other functions “just in the middle” between linear and exponential.
10
Math Vs Social Science
13
How helpful is non-standard analysis?
3
“negative” vs “minus”
4
What are some good group theory references?
27
What are some of the big open problems in 3-manifold theory?
3
Introductory text on geometric group theory?
15
Can a group be a universal Turing machine?
7
Commutator subgroup does not consist only of commutators?
11
Classification problem for non-compact manifolds
1
Is there a theorem that says that there is always more than one way to “continue a finite sequence”?
20
〈x,y : x^p = y^p = (xy)^p = 1〉
5
The free group $F_2$ has index 12 in SL(2,$\mathbb{Z}$)
6
Existence of simultaneously normal finite index subgroups
10
What part of the fundamental group is captured by the second homology group?
5
Convex hull in CAT(0)
10
Applications of infinite graph theory
6
The ants-on-a-ball problem
6
Why should I care about Heegaard-Floer theory?
1
Group Action with a Fixed-Point Property
4
Subgroups of free abelian groups are free: a topological proof?
5
Fundamental theorems
6
Diffeomorphism of 3-manifolds
3
Can all n-manifolds be obtained by gluing finitely many blocks?
10
less elementary group theory
1 2 3 4 5 next