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Ehsaan's user avatar
Ehsaan's user avatar
Ehsaan
  • Member for 11 years
  • Last seen this week
  • Waterloo, Ontario
9 votes

Are polynomials with the same roots identical?

7 votes
Accepted

Possible flaw in "proof" that a sum of two compact operators is compact

6 votes
Accepted

Show $4x^2+6x+3$ is a unit in $\mathbb{Z}_8[x]$ (inverting unit + nilpotent)

5 votes
Accepted

Why is trivial intersection of groups $N$ and $H$ not required in the definition of outer semi-direct products?

5 votes
Accepted

Morita equivalent rings have homeomorphic spectra?

5 votes
Accepted

The complement of a point in $\Bbb{A}^n$ is compact in the Zariski topology.

4 votes

Is $\{ 0 \}$ a basis of the free module $\{ 0 \}$?

4 votes
Accepted

Prove that a finitely generated soluble periodic group is finite.

3 votes

How Wilson's theorem implies the existence of an infinitude of composite numbers of the form $n! + 1$?

3 votes
Accepted

Alaoglu theorem over the $p$-adics

3 votes

Does exactness of $0 \to \Bbb Z^n \to G \to \Bbb Z^m \to 0$ imply $G$ is isomorphic to $\Bbb Z^{m+n}$?

3 votes
Accepted

Stuck: Finding an Isomorphism for an Invertible Ring

3 votes
Accepted

Quotient of semi-simple representation is semi-simple

3 votes
Accepted

Are the real numbers a subgroup of the circle group?

3 votes
Accepted

Generators of Principal Ideal

2 votes

Show that a set $ \mathcal{O} \subseteq \mathbb R$ must be equal to $\mathbb R$.

2 votes
Accepted

Determine whether the following relation is an equivalence relation

2 votes
Accepted

Subgroup for Symmetric Groups

2 votes
Accepted

Proving ideal is prime ideal

2 votes
Accepted

Prove that when d(x,a) and d(y,a) is equal for all $a \in A$ and A countable, dense then x = y

2 votes
Accepted

show a quotient ring is a field

2 votes
Accepted

The number of elements in a set of matrices with some properties

2 votes

$n(n+1)(n+2)$ is never a square

2 votes

Idempotent elements of Jacobson Ring

2 votes
Accepted

A question about the degree of an extension field

2 votes

Equality of submodules satisfying given conditions - Verification of solution

2 votes

$G/\mbox{Ker}\:\phi\cong H$ is a natural transformation?

2 votes

Why is the additive group of an ordered division ring divisible, with a dense underlying set?

1 vote

Prove that there is no nonabelian simple group of order less than 60

1 vote
Accepted

Finitely generated extension implies finitely generated field?