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C.W's user avatar
C.W's user avatar
C.W
  • Member for 6 years, 4 months
  • Last seen more than 2 years ago
17 votes

Mathematical ideas that took long to define rigorously

7 votes
Accepted

Galois group of $\mathbb{Q}_{p}$ over $\mathbb{Q}$?

5 votes
Accepted

Definition of Module Structure Induced by Ring Homomorphism

5 votes

Notation for dual space

5 votes
Accepted

Zeros of Polynomials in Arbitrary Rings

3 votes
Accepted

Regular ideals are invertible

3 votes
Accepted

Primitive of a Group Action

2 votes

$\mathbb{Z} / p \mathbb{Z}$ exercise

2 votes

Taylor series of $\frac{1}{1-\exp(z-1)}$

2 votes

Hecke Bound for Cusp - Modular Forms

1 vote
Accepted

Using long division to divide one polynomial by another of a higher degree

1 vote

A sequence $f_k:\Omega\rightarrow \mathbb R$ such that $\int f_k=0 \quad \forall k\in \mathbb N $ and $\lim\limits_{k\to\infty} f_k \equiv1$.

1 vote

If we have a non-constant entire function $f(z)$ show that $u(z)$ is not bounded.

1 vote
Accepted

Improper Integral Definitions and Infinite implications

1 vote

Prove of average of a periodic function

1 vote

Proving which ideals of $K[x,y]$ are primes or maximals.

1 vote
Accepted

Prove that $\mathbb{Z}^+$ is not compact with the arithmetic progression topology

1 vote
Accepted

Visualizing a vector field

0 votes

Find all eigenvalues for $L(\vec{x})=\vec{x}-2proj_\vec{n}(\vec{x})$ for some non-zero vector $\vec{n}$