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bzc's user avatar
bzc
  • Member for 13 years, 10 months
  • Last seen more than a week ago
107 votes
Accepted

Quotient ring of Gaussian integers

22 votes

Can a ring of positive characteristic have infinite number of elements?

21 votes
Accepted

"Standard" ways of telling if an irreducible quartic polynomial has Galois group $C_4$?

17 votes

What are some applications of Chebotarev Density Theorem?

15 votes

Irreducibility of $x^n-x-1$ over $\mathbb Q$

13 votes

Distance traveled by a bouncing ball with exponentially diminishing rebounds

13 votes

Learning Roadmap for Algebraic Topology

12 votes

Interpreting the Cayley-Hamilton theorem

11 votes
Accepted

Show that $q(n)=11n^2 + 32n$ is a prime number for two integer values of $n$

11 votes
Accepted

Can you have a ring homomorphism from a ring to itself which isn't the identity?

10 votes
Accepted

How to classify 3-sheeted covering space for $S_{1}\vee S_{1}$?

10 votes
Accepted

Formal notation related to Cartesian product

10 votes
Accepted

Considering math or computer science

9 votes
Accepted

fastest way to calculate the remainder (modular)

9 votes
Accepted

knapsack algorithm that looks too good to be true

9 votes
Accepted

Can't Solve an Integral

9 votes

How do you show that $\mathbb{Z}[x]/(x^2-29) \cong \{a+b\sqrt{29}|a,b \in \mathbb{Z}\}$?

9 votes

Divisibility criteria of 24. Why is this?

8 votes
Accepted

What is $\int x^re^xdx$?

8 votes
Accepted

Definition of schematically dense

8 votes

Suggest a tricky method for this problem

8 votes
Accepted

Determining don't-care values in a Karnaugh Map

7 votes
Accepted

Every finite group is finitely generated.

7 votes
Accepted

DVRs Sitting in an Extension

7 votes
Accepted

Why is the extension $k(x,\sqrt{1-x^2})/k$ purely transcendental?

7 votes
Accepted

Is the circle a rational curve and what is its function field?

7 votes

Unusual presentation of a cyclic group.

7 votes
Accepted

What does it mean for an action to be an $F$-linear transformation?

7 votes

P adic numbers number theory

6 votes
Accepted

On the class group of $\mathbb{Q}(\sqrt{-199})$

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