User Neal

51 votes

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Visualization of Lens Spaces

answered Mar 12, 2015 at 13:54

45 votes

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How to construct a genus 2 surface from 8-gon?

reference-request algebraic-topology

answered Aug 29, 2013 at 20:32

35 votes

One question to know if the number is 1, 2 or 3

puzzle

answered Oct 3, 2013 at 14:49

31 votes

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CW complexes and manifolds

algebraic-topology manifolds cw-complexes

answered Dec 4, 2013 at 20:54

28 votes

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Continuous Functions from $\mathbb{R}$ to $\mathbb{Q}$

general-topology

answered Feb 22, 2012 at 14:49

27 votes

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Any example of manifold without global trivialization of tangent bundle

differential-geometry manifolds vector-bundles

answered Oct 24, 2012 at 12:14

27 votes

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Solve $4^{9x-4} = 3^{9x-4}$

algebra-precalculus

answered Oct 10, 2013 at 12:31

26 votes

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Do I need to understand Multi-Variable Calculus to study Linear Algebra?

calculus linear-algebra multivariable-calculus

answered Sep 19, 2011 at 2:05

25 votes

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Why is the absolute sign needed in the definition of a bounded function

definition absolute-value

answered Nov 13, 2014 at 3:18

24 votes

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Chain rule of differential in smooth manifold

differential-geometry

answered Oct 4, 2013 at 12:49

23 votes

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Abelian Covering Space of Surface of genus $g$

algebraic-topology covering-spaces

answered Nov 15, 2012 at 5:13

22 votes

Waves of differing frequency are orthogonal - help me understand

linear-algebra signal-processing

answered Aug 23, 2013 at 15:59

21 votes

Proof that the trace of a matrix is the sum of its eigenvalues

linear-algebra matrices eigenvalues-eigenvectors trace

answered Oct 30, 2013 at 22:15

21 votes

Accepted

Why do we factor polynomials the way we do?

algebra-precalculus polynomials factoring

answered Sep 4, 2018 at 2:35

20 votes

Infiniteness of non-twin primes.

elementary-number-theory prime-numbers prime-twins

answered Dec 21, 2013 at 14:59

20 votes

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Mapping cylinder of $z\rightarrow z^2$

algebraic-topology

answered Aug 23, 2013 at 17:09

20 votes

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Is the difference between consecutive prime numbers always an even number?

number-theory prime-numbers

answered Jan 13, 2013 at 18:42

20 votes

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What is the universal cover of SL(2,R)?

group-theory lie-groups riemannian-geometry

answered May 4, 2013 at 14:29

20 votes

Topology of the tangent bundle of a smooth manifold

general-topology differential-geometry

answered May 12, 2012 at 5:18

20 votes

Does $i^4$ equal $1?$

algebra-precalculus proof-verification complex-numbers exponentiation

answered Jan 5, 2017 at 21:00

19 votes

Accepted

How to define a Riemannian metric in the projective space such that the quotient projection is a local isometry?

riemannian-geometry projective-geometry projective-space isometry

answered Apr 21, 2012 at 15:53

19 votes

Adjoint of derivative operator on polynomial space

linear-algebra

answered Jul 18, 2013 at 3:24

18 votes

GRE Math Subject Test

advice gre-exam

answered Oct 20, 2012 at 23:46

17 votes

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How do I see that the tangent bundle of torus is trivial

differential-geometry

answered Sep 26, 2012 at 4:29

17 votes

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are non-degenerate critical points always isolated?

real-analysis differential-geometry

answered May 10, 2012 at 18:30

17 votes

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How to factor $2x^2-x-3$?

algebra-precalculus polynomials factoring

answered Aug 20, 2013 at 2:39

17 votes

Accepted

How to avoid stupid mistakes in calculus exams without checking the whole process?

calculus soft-question arithmetic

answered May 23, 2015 at 16:07

16 votes

what is expected from a PhD student?

soft-question advice

answered Aug 7, 2013 at 2:34

16 votes

Accepted

Epsilon delta proof of a limit problems

calculus limits proof-writing

answered Jan 22, 2012 at 21:56

16 votes

Accepted

How to compare the values $\sqrt 2$ and $\ln(3).$

real-analysis real-numbers

answered Sep 7, 2016 at 3:12

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716 Answers

Visualization of Lens Spaces

How to construct a genus 2 surface from 8-gon?

One question to know if the number is 1, 2 or 3

CW complexes and manifolds

Continuous Functions from $\mathbb{R}$ to $\mathbb{Q}$

Any example of manifold without global trivialization of tangent bundle

Solve $4^{9x-4} = 3^{9x-4}$

Do I need to understand Multi-Variable Calculus to study Linear Algebra?

Why is the absolute sign needed in the definition of a bounded function

Chain rule of differential in smooth manifold

Abelian Covering Space of Surface of genus $g$

Waves of differing frequency are orthogonal - help me understand

Proof that the trace of a matrix is the sum of its eigenvalues

Why do we factor polynomials the way we do?

Infiniteness of non-twin primes.

Mapping cylinder of $z\rightarrow z^2$

Is the difference between consecutive prime numbers always an even number?

What is the universal cover of SL(2,R)?

Topology of the tangent bundle of a smooth manifold

Does $i^4$ equal $1?$

How to define a Riemannian metric in the projective space such that the quotient projection is a local isometry?

Adjoint of derivative operator on polynomial space

GRE Math Subject Test

How do I see that the tangent bundle of torus is trivial

are non-degenerate critical points always isolated?

How to factor $2x^2-x-3$?

How to avoid stupid mistakes in calculus exams without checking the whole process?

what is expected from a PhD student?

Epsilon delta proof of a limit problems

How to compare the values $\sqrt 2$ and $\ln(3).$