User Alex Becker - Mathematics Stack Exchange

Alex Becker

Member for 13 years, 1 month
Last seen more than 9 years ago

mathoverflow.net/users/13832/…
Chicago, IL

21 Questions

Score Activity Newest Views

78 votes

1 answer

5k views

Gerrymandering on a high-genus surface/can I use my powers for evil?

asked Jul 6, 2012 at 23:41

64 votes

3 answers

12k views

What use is the Yoneda lemma?

asked Jan 2, 2012 at 3:17

47 votes

4 answers

14k views

Enlightening proof that the algebraic numbers form a field

asked Mar 15, 2013 at 7:35

34 votes

2 answers

1k views

Can every number be written as a small sum of sums of squares?

asked Feb 25, 2013 at 10:26

20 votes

4 answers

5k views

Why is the trace of a matrix the sum along its diagonal?

asked Oct 24, 2013 at 0:18

20 votes

3 answers

3k views

Primary ideals of Noetherian rings which are not irreducible

asked Mar 23, 2011 at 4:46

19 votes

2 answers

636 views

Given a fiber bundle $F\to E\overset{\pi}{\to} B$ such that $F,B$ are compact, is $E$ necessarily compact?

asked Mar 28, 2012 at 4:12

15 votes

2 answers

5k views

Undergraduate mathematics programs

asked Mar 31, 2011 at 3:13

15 votes

0 answers

705 views

Computing the homology class of a curve using Mayer-Vietoris

asked Jul 6, 2013 at 20:52

13 votes

2 answers

237 views

Uniformly solvable families of polynomials

asked May 17, 2013 at 17:33

7 votes

2 answers

1k views

Classification of fields which are isomorphic to some finite extension

asked Jan 3, 2014 at 1:30

6 votes

3 answers

709 views

How often must an irreducible polynomial take a prime value?

asked Mar 22, 2013 at 3:19

5 votes

4 answers

1k views

Mathematical misconceptions and how to combat them

asked Mar 26, 2011 at 4:27

5 votes

2 answers

894 views

Applications of the p-adics

asked Mar 20, 2012 at 3:22

4 votes

2 answers

126 views

Equivalence of $x,y\in G$ given that $xzy^{-1}z^{-1}$ is a commutator for some $z$

asked Dec 28, 2012 at 8:28

3 votes

1 answer

308 views

If $K^{\mathrm{Gal}}/F$ is obtained by adjoining $n$th roots, must $K/F$ be as well?

asked Apr 4, 2014 at 20:32

2 votes

1 answer

554 views

Expressing a matrix in terms of subgroup generators using Magma

asked Apr 21, 2014 at 17:55

2 votes

1 answer

429 views

Classification of parabolic elements of a subgroup of $PSL_2(\mathbb R)$

asked Apr 26, 2014 at 5:30

2 votes

0 answers

87 views

Finding the smallest nonzero vector perpendicular to $\vec v$ with integer coordinates

asked Feb 8, 2013 at 16:48

1 vote

1 answer

250 views

Solutions to a system of ODE's

asked Mar 28, 2011 at 14:45

1 vote

2 answers

443 views

Atlas and transition maps for a Lie group

asked Apr 8, 2011 at 6:38