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Sam Nead

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Top Questions
86 votes

Teaching homology via everyday examples

at.algebraic-topology big-list teaching homology asked Jan 1, 2014 at 12:50
mathoverflow.net

53 votes

Typesetting the "define equals" symbol

math-mode symbols relation-symbols asked Sep 18, 2011 at 19:33
tex.stackexchange.com

43 votes

Applications of knot theory

teaching knot-theory gt.geometric-topology asked Dec 3, 2010 at 22:23
mathoverflow.net

38 votes

Do finite groups acting on a ball have a fixed point?

gt.geometric-topology finite-groups fixed-point-theorems asked Oct 18, 2011 at 22:46
mathoverflow.net

26 votes

Teaching the fundamental group via everyday examples

at.algebraic-topology teaching fundamental-group covering-spaces asked Oct 21, 2014 at 20:19
mathoverflow.net

15 votes

Teaching cohomology via everyday examples

at.algebraic-topology cohomology teaching asked May 10, 2019 at 6:55
mathoverflow.net

13 votes

Closed hyperbolic manifold with right-angled fundamental domain

gt.geometric-topology hyperbolic-geometry asked Mar 10, 2010 at 20:18
mathoverflow.net

11 votes

Explicit triples of isomorphic Riemann surfaces

cv.complex-variables algebraic-curves hyperbolic-geometry riemann-surfaces conformal-maps asked May 3, 2022 at 10:26
mathoverflow.net

11 votes

Early illustrations of topological notions in published work

reference-request gn.general-topology asked Aug 14 at 11:58
mathoverflow.net

10 votes

Packing twelve spherical caps to maximize tangencies

mg.metric-geometry spherical-geometry packing asked May 17, 2010 at 17:59
mathoverflow.net

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Top Answers
141
Magic trick based on deep mathematics
mathoverflow.net

58
Why can you turn clothing right-side-out?
math.stackexchange.com

51
Examples of common false beliefs in mathematics
mathoverflow.net

47
Why does the Mandelbrot set contain (slightly deformed) copies of itself?
math.stackexchange.com

41
What would you want to see at the Museum of Mathematics?
mathoverflow.net

38
What part is left unsolved in the Unknotting problem? (after results of Bar-Natan, Khovanov, Kronheimer and Mrowka)
mathoverflow.net

31
Magic trick based on deep mathematics
mathoverflow.net

30
Drawing of the eight Thurston geometries?
mathoverflow.net

21
What group is $\langle a,b \,| \, a^2=b^2 \rangle$?
mathoverflow.net

21
Obtain any 3-manifold from repeating surgeries on knots in $S^3$
mathoverflow.net

20
Teichmuller Theory introduction
mathoverflow.net

20
Why is the fundamental group of a compact Riemann surface not free ?
mathoverflow.net

19
Collapsible group words
mathoverflow.net

19
3-manifold with fundamental group $\mathbb Z$
mathoverflow.net

18
Rediscovery of lost mathematics
mathoverflow.net

17
Self-covering spaces
mathoverflow.net

17
How many digits of $\sqrt{2}$ are known to date?
mathoverflow.net

17
Mandelbrot fractal: How is it possible?
math.stackexchange.com

16
How would a topologist explain "every Riemann surface of genus $g$ is hyperelliptic if and only if $g=2$"?
mathoverflow.net

16
Examples of locally hyperbolic groups
mathoverflow.net

16
Topology of the space of embedded genus $g$ surfaces in $S^3$
mathoverflow.net

16
Classification of homology 3-spheres?
mathoverflow.net

15
Fixed-point free diffeomorphisms of surfaces fixing no homology classes
mathoverflow.net

15
Is there a contractible hyperbolic 3-orbifold of finite volume?
mathoverflow.net

15
Problems known to be in both NP and coNP, but not known to be in P
mathoverflow.net

15
Computational complexity theoretic incompleteness: is that a thing?
mathoverflow.net

15
In knot theory: Benefits of working in $S^3$ instead of $\mathbb{R}^3$?
mathoverflow.net

14
Can you do math without knowing how to count?
mathoverflow.net

14
Books you would like to see translated into English
mathoverflow.net

14
Is this a sleight of hand or a video edit?
mathoverflow.net

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