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Alex B.'s user avatar
Alex B.'s user avatar
Alex B.'s user avatar
Alex B.
  • Member for 13 years, 7 months
  • Last seen this week
73 votes

The Langlands program for beginners

42 votes
Accepted

Representation theory over $\mathbb{Q}$

37 votes

Why should we care about groups at all?

36 votes
Accepted

How does one give a mathematical talk?

33 votes
Accepted

Understanding the intuition behind math

30 votes

Does $\zeta(3)$ have a connection with $\pi$?

28 votes
Accepted

Find examples of two series $\sum a_n$ and $\sum b_n$ both of which diverge but for which $\sum \min(a_n, b_n)$ converges

26 votes
Accepted

Galois group of a reducible polynomial over $\mathbb {Q}$

25 votes
Accepted

Can a smooth curve have a segment of straight line?

23 votes
Accepted

Why is the math for negative exponents so?

22 votes

Importance of Group Representation theory

20 votes
Accepted

Is $\sum \sin{\frac{\pi}{n}}$ convergent?

18 votes
Accepted

How are the Tate-Shafarevich group and class group supposed to be cognates?

17 votes

Show $x^6 + 1.5x^5 + 3x - 4.5$ is irreducible in $\mathbb Q[x]$.

17 votes
Accepted

Group objects in category of groups

16 votes
Accepted

Ramification in a tower of extensions

16 votes

What do the $p$-adic roots of unity look like?

16 votes

What is the value of $1^x$?

16 votes

Intuition behind conjugation in group theory

16 votes

How to calculate $\lim_{x \to \infty} \left ( \frac{x+2}{x} \right )^{x}=e^{2}$

16 votes
Accepted

Ring of $p$-adic integers $\mathbb Z_p$

15 votes

Software for Galois Theory

15 votes

Integral points on an elliptic curve

15 votes
Accepted

How to show that $[\mathbb{Q}(\sqrt[3]{2},\sqrt[3]{3}):\mathbb{Q}]=9$?

15 votes

A conjecture about the form of some prime numbers

14 votes

Examples of surjective sheaf morphisms which are not surjective on sections

14 votes

Classifying the irreducible representations of $\mathbb{Z}/p\mathbb{Z}\rtimes \mathbb{Z}/n \mathbb{Z}$

14 votes

Elliptic Curves and Points at Infinity

13 votes
Accepted

What is the mathematical symbol for the unique values in a vector?

13 votes
Accepted

prove: $2^n$ is not divisible by 5 for any $n$

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