Skip to main content
student's user avatar
student's user avatar
student's user avatar
student
  • Member for 7 years, 7 months
  • Last seen this week
6 votes

Proving that cyclotomic polynomials have integer coefficients

2 votes

Monic Factors in $\mathbb Q[x]$ of a Monic $f \in \mathbb Z[x]$ are also in $\mathbb Z[x]$

2 votes
Accepted

Construction and properties of a fat Cantor set (HW question)

1 vote

Show that the set of all complex numbers $z$ such that $|z| \leq 1$ is closed?

1 vote

Experiences with Rudin?

1 vote

prove that two subgroups are isomorphic

1 vote

order of a polynomial at a prime.

1 vote

proving a polynomial is irreducible

1 vote

Diagonals of a parallelogram bisect each other

1 vote

Find a polynomial of degree > 0 in $\mathbb Z_4[X]$ that is a unit.

1 vote

Exercise 1.12 from Ed Burger's book The Number Jungle.

1 vote

approximating $1/{\sqrt{2}}$ by rationals

1 vote

decimal expansion formed by concatenating the powers of 13 yields an irrational number

0 votes

Proof that $A_n$ the only subgroup of $ S_n$ index $2$.

0 votes

Proving that a mapping is a group homomorphism

0 votes

Open covering for rationals in [0, 1].

0 votes

How to show that the commutator subgroup is a normal subgroup

0 votes

Uniqueness of subgroups of a given order in a cyclic group

0 votes

Example of two convergent series whose product is not convergent.

0 votes

Euler's phi function $\phi(n)$ is even for all $n \geq 3$; when is it not divisible by $4$?

0 votes

Diagonals of a parallelogram bisect each other

0 votes

Greatest Common Divisors in integral domains

0 votes

a variant of the Cantor function

0 votes

find the sum to $n$ terms of the series $1+4w+9w^2+...+n^2w^{n-1}$ where $w$ is $n$th root of unity

0 votes

Prove that $\overline{\ln z}=\ln\overline z$

0 votes

How can I argue that for a number to be divisible by 144 it has to be divisible by 36?

-1 votes

Minimal polynomial of $\sqrt{2}+\sqrt{3}$ over $\mathbb Q$

-2 votes

Calculus II Professor will not accept my correct integral evaluation that uses a different method, should I bring this up further?