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user366818
  • Member for 7 years, 8 months
  • Last seen more than 1 year ago
21 votes
6 answers
9k views

Why are Fibonacci numbers bad for Euclid's Algorithm and how to derive this upper bound on number of steps needed in general?

13 votes
3 answers
1k views

Commutativity of Ordinal Multiplication

9 votes
4 answers
337 views

Is there a pattern to expression for the nested sums of the first $n$ terms of an expression? [duplicate]

7 votes
0 answers
1k views

Degree of irreducible polynomial and field extension are coprime

7 votes
1 answer
1k views

Find all $n \in \mathbb N$ such that $\sigma(n) + \phi(n) = n\tau(n)$

7 votes
2 answers
633 views

Clarification on proof that $\mathbb Q (\zeta _ m) \cap \mathbb Q(\zeta_n) = \mathbb Q$ when $\gcd(m,n) = 1$

7 votes
1 answer
2k views

Irreducible Dual Representation

6 votes
0 answers
918 views

Galois groups of quartic over $\mathbb Q$ and $\mathbb Q(i)$

6 votes
3 answers
1k views

Prove $M/N$ is free implies $M \cong N \oplus M/N$

5 votes
2 answers
314 views

Galois group of quartic with only complex roots

5 votes
1 answer
850 views

Given an anti-chain of the powerset of a finite set, is there a disjoint maximal chain?

3 votes
1 answer
96 views

Show this representation of $\mathfrak{sl}_2(\mathbb C)$ is completely reducible

3 votes
1 answer
108 views

Where is the flaw in my reasoning about the number of irreducible degree 9 polynomials over $\mathbb F_2$?

3 votes
2 answers
623 views

Clarifications on proof of Sperner's Theorem

3 votes
1 answer
2k views

Lower bound for the Ramsey number $R(3,t)$

3 votes
1 answer
720 views

Help with induction for graph with no path of length $k$

3 votes
3 answers
577 views

Show Galois group of $f(t) = t^5 - 3$ over $\mathbb Q$ is solvable

3 votes
3 answers
630 views

Given degree 3 minimal polynomial of $\alpha$, find minimal polynomial of $\frac{\alpha^2 + \alpha}{2}$

3 votes
1 answer
256 views

$N$ square-free $\Rightarrow \exists a \in (\mathbb Z / N\mathbb Z)^{\times}, (\frac{a}{N}) = -1$

3 votes
1 answer
1k views

Prove $x \leq \left( 1 + \frac{\log x}{\log2} \right) ^{\pi(x)}$

3 votes
1 answer
1k views

Extension of degree 2 with characteristic not 2

3 votes
0 answers
64 views

What is the Ramsey Number $R(H_k)$ for this special graph $H_k$

3 votes
1 answer
34 views

Am I computing the norm of this ideal right?

3 votes
1 answer
450 views

Highest Weights of Defining and Adjoint Representations of $\mathfrak{so}_5$

3 votes
1 answer
423 views

Unique faithful $7$-dimensional representation of semisimple Lie Algebra with $G_2$ root system

3 votes
0 answers
86 views

Decomposing $k$th exterior powers $\Lambda^kV(\omega_1)$

3 votes
1 answer
139 views

Two definitions of an associated prime of an $R$-module

3 votes
1 answer
376 views

Statement Equivalent to the Riemann Hypothesis

3 votes
1 answer
143 views

Universal property of a free object

3 votes
0 answers
28 views

Existence of a nilpotent subgroup $N \leq G$ of step $\leq n$ such that a finite $A$ is in $K^{O_n(1)}$ left cosets of $N$