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Guenterino
  • Member for 4 years, 11 months
  • Last seen more than a month ago
  • Germany
5 votes
Accepted

Uniqueness of the topology on $\mathbb{R}$

5 votes
Accepted

How a layperson in mathematics learn mathematics from basics to at least intermediate level?

3 votes
Accepted

Genus Degree Formula for Curves over Arbitrary Fields and a Reference Request

3 votes

Conditions on $f$ and $g$ if $(g\circ f)^{-1}$ exists

3 votes
Accepted

A problem about Lebesgue-measurability, irrational numbers, and rational numbers.

2 votes
Accepted

Investigate if the following polynomial in Q[x] is reducible or irreducible: $x^3-5x^2+2x+1$

2 votes

Trying to understand question in exercise about relations

2 votes
Accepted

Are these two fields $\mathbb {F}_{p}(x)$ and $\mathbb {F}_{p}(x^p)$ are isomorphic fields?

2 votes

Doing research as an undergraduate student

2 votes

Is guessing person's name an NP problem example?

1 vote
Accepted

Let $K=F(u)$ be a separable extension of $F$ with $u^m\in F$. Show that if the characteristic of $F$ is $p$ and $m=p^tr$, then $u^r\in F$.

1 vote

$\liminf s_n = \limsup s_n = +\infty$ implies that the limit of the sequence is also $+\infty$

1 vote

Definition of limits with absolute constant

1 vote

How many combinations do we have if we choose $5$ balls out of $10$ if there are $2$ each of five different colors?

1 vote

Series convergence of function

1 vote
Accepted

Shouldn't the graph of $y=1$ be the same as $y=\frac{\sqrt{4-x}}{\sqrt{4-x}}$ because $1=\frac{\sqrt{4-x}}{\sqrt{4-x}}$?

1 vote
Accepted

Prove: If two finite-dimensional vector spaces are isomorphic, then they have the same dimension.

1 vote

How to find probability in when using an "or" statement

1 vote

Example of extension $\mathbb{Q}(a,b) / \mathbb{Q}$ that is not simple? And more.

0 votes

What is the mistake in balancing the equation in a demonstration that $0.999\ldots=1$?

0 votes
Accepted

What is the complexity of complex matrix multiplication?

0 votes

Formula on the sum of all the elements of $G=\Bbb Z_{p_1^{\alpha_1}}\times \dots \times \Bbb Z_{p_n^{\alpha_n}}$

0 votes

Proof that if a square matrix has a row of zeroes, the square matrix is non-invertible.

0 votes

Showing span to be in $\Bbb R^2$ space

0 votes
Accepted

What does this Set actually mean/contain?