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Mathmo123
United Kingdom
Post-doc in algebraic number theory.
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Top Questions
32
votes
For integers $a \ge b > 1$ is $f(a,b) = a^b + b^a$ injective?
nt.number-theory
asked Aug 14, 2014 at 17:24
mathoverflow.net
29
votes
For integers $a\ge b\ge 2$, is $f(a,b) = a^b + b^a$ injective?
elementary-number-theory
diophantine-equations
asked Aug 5, 2014 at 10:57
math.stackexchange.com
12
votes
Varying column and row width in tikz-cd
tikz-cd
asked Mar 6, 2015 at 14:50
tex.stackexchange.com
10
votes
Why does taking completions make number fields simpler?
number-theory
algebraic-number-theory
intuition
p-adic-number-theory
asked Dec 1, 2014 at 18:41
math.stackexchange.com
7
votes
For $p\ge3$ there is no extension of $\mathbb Q_p$ with Galois group $S_4$
algebraic-number-theory
p-adic-number-theory
local-field
asked Jan 4, 2015 at 17:02
math.stackexchange.com
7
votes
The mod $p$ Galois representation of the Frey curve is unramified away from $2, p$
algebraic-number-theory
elliptic-curves
galois-representations
asked Feb 9, 2015 at 14:40
math.stackexchange.com
6
votes
Semisimplicity of the induced representation of an irreducible representation
abstract-algebra
group-theory
representation-theory
asked Mar 3, 2016 at 12:47
math.stackexchange.com
6
votes
Extension of $\mathbb Q$ which splits only at primes in $S$
nt.number-theory
algebraic-number-theory
asked Feb 23, 2017 at 21:13
mathoverflow.net
6
votes
Endomorphism algebras of restricted representations
gr.group-theory
rt.representation-theory
galois-representations
division-algebras
asked Jul 26, 2017 at 12:05
mathoverflow.net
5
votes
Endomorphism rings of a compatible system of Galois representations
nt.number-theory
galois-representations
asked Sep 7, 2017 at 20:52
mathoverflow.net
1
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Top Answers
99
Free throw interview question
math.stackexchange.com
68
Past open problems with sudden and easy-to-understand solutions
math.stackexchange.com
36
Is every subgroup of a normal subgroup normal?
math.stackexchange.com
34
Demystifying modular forms
math.stackexchange.com
28
Can a number have infinitely many digits before the decimal point?
math.stackexchange.com
28
If an inequality is true for all natural numbers, is it necessarily true for all real numbers inbetween?
math.stackexchange.com
26
Function with infinitely many right inverses?
math.stackexchange.com
21
What is Representation Theory?
math.stackexchange.com
21
How can I prove $\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}...}}}}=2$
math.stackexchange.com
19
Theorem: the first positive number to have 500 divisors has to be even.
math.stackexchange.com
19
Let F be a field of order 32. Show that the only subfields of F are F itself and {0,1}.
math.stackexchange.com
18
In how many ways can the group $\mathbb Z_5$ act on the set $\{1,2,3,4,5\}$ $?$
math.stackexchange.com
18
Isomorphic quotient groups $\frac{G}{H} \cong \frac{G}{K}$ imply $H \cong K$?
math.stackexchange.com
17
What is the probability that I roll a 2 before I roll two odd numbers?
math.stackexchange.com
13
Existence of Open Covers
math.stackexchange.com
13
Why are people more interested in the Riemann hypothesis than Goldbach's conjecture?
math.stackexchange.com
12
Solving a cubic polynomial equation.
math.stackexchange.com
11
Why is the polynomial $2x^2 + 4$ reducible over $\mathbb{Z}$
math.stackexchange.com
11
The sum of two algebraic integers of degree $2$ is an algebraic integer of degree $2$ or $4$, right?
math.stackexchange.com
11
The high power integral
math.stackexchange.com
11
The sum of two irrational square roots
math.stackexchange.com
11
Primes of form $a^2 + 24b^2$
math.stackexchange.com
10
The correspondence theorem for groups
math.stackexchange.com
10
From an abstract algebra point of view, why is zero so special?
math.stackexchange.com
10
Differentiate $ f(x) = \frac 2x $ from first principles
math.stackexchange.com
10
A few questions on the Gaussian integers
math.stackexchange.com
10
Can the winding number be infinite?
math.stackexchange.com
9
Disjoint compact subsets of a Hausdorff space are separated by disjoint open neighborhoods
math.stackexchange.com
9
When does $P(A|B) = P(B|A)$?
math.stackexchange.com
9
Why doesn't this converge?
math.stackexchange.com
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