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B.Swan's user avatar
B.Swan's user avatar
B.Swan
  • Member for 7 years, 5 months
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3 votes
Accepted

Is the following expression sound for all functions?

3 votes
Accepted

Truth Statement of a domain

3 votes

$K=\Bbb Q(\sqrt3,\sqrt[3]{2}) $, Compute $[K:\Bbb Q]$.

3 votes
Accepted

Difference between $F[x,y] $ and $F(x)[y]$ in Ring theory

2 votes
Accepted

Proving a basis of V + U is a basis for $\frac{V}{U}$

2 votes

The number of inversions in a permutation is equal to the number of its inverse permutation.

2 votes
Accepted

How to understand RSA encryption/decryption equation?

2 votes
Accepted

How to solve this rational integral?

2 votes
Accepted

Fixed point of a map iteration sequence

2 votes

Frac$(R)=F$, quotient field of the integral domain $R$, then Frac$(R[x]) \cong F(x)$ and also Frac$(R[x]) \cong F(x_{1},x_{2},....,x_{n})$.

2 votes
Accepted

(Intermediate) normal extension is stable

2 votes

A Counting Problem about selecting a President and Vice President for a club

2 votes

Prove by induction: $(n-1)!>2^n$ for all $n \geq 6$

1 vote

Is ultimately rolling a 6 on a dice guaranteed?

1 vote

Why isn't this set of vectors a basis of planar subspace in ${\bf R}^3$

1 vote

Distance to closed and convex sets that have intersection $C \subseteq D \rightarrow$ $ d_D(x^*) \leq d_C(x^*) $

1 vote
Accepted

the difference between 90° and 30° is 60°. then why is sine60° not equal to sine90°- sine30°?

1 vote

Random Walk $\mathbb P(T_0>n $ and $S_n=a) = \mathbb P(T_a=n) =\frac{a}{n} \mathbb P(S_n=a)$

1 vote
Accepted

Unique Factorization Theorem for Integral Domains

1 vote

Elements of odd order generate a proper subgroup of a group

1 vote
Accepted

Galois Group and Subfield lattice of $(x^2 - 7)(x^4 + x^3 + x^2 + x + 1)$ over $\mathbb{Q}$

0 votes

Prove that there exists $M > 0$ such that $||k_n|| \leq M$ for all $n$ in $\mathbb{N}$

0 votes

Unable to understand this intergration

0 votes
Accepted

A somewhat "familiar argument" about Artin's lemma

0 votes

If the sequence $\{x_n\}$ is bounded, prove that for ∀ ε>0 ∃ interval [a,b]⊆R of length ε such that x_n∈[a,b] for infinitely many values of n.

0 votes

Musical notes and exponentials and logarithms

0 votes

Is there a specific formula for geometric sequences?

0 votes

Find bases for $\ker T,\text{im}\,T$ with respect to the members of $B$

0 votes

How to explain the following definition of $\lim\sup s_n$ intuitively?

0 votes

Basic math question about batches vs totals and remainders