User Guenterino

5 votes

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

answered Jan 7, 2021 at 14:36

5 votes

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

answered Jul 22, 2021 at 13:47

3 votes

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

answered Jul 24, 2021 at 18:09

3 votes

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

answered Jul 29, 2021 at 15:13

3 votes

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

answered Jun 12, 2021 at 9:19

2 votes

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

answered Jan 13, 2021 at 12:47

2 votes

Trying to understand question in exercise about relations

answered Jul 17, 2021 at 19:07

2 votes

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

answered Jul 19, 2021 at 6:55

2 votes

Doing research as an undergraduate student

answered Apr 29, 2020 at 20:48

2 votes

Is guessing person's name an NP problem example?

answered Jul 20, 2021 at 14:14

1 vote

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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 $u^r\in F$.

answered Jul 17, 2021 at 19:03

1 vote

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

answered Jul 17, 2021 at 19:10

1 vote

Definition of limits with absolute constant

answered Aug 6, 2021 at 0:00

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?

answered Feb 17, 2022 at 11:21

1 vote

Series convergence of function

answered Dec 11, 2020 at 16:30

1 vote

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

answered Dec 11, 2020 at 16:41

1 vote

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

answered Dec 12, 2020 at 13:51

1 vote

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

answered Dec 14, 2020 at 21:24

1 vote

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

answered Jul 20, 2021 at 10:38

0 votes

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

answered Jul 20, 2021 at 14:04

0 votes

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What is the complexity of complex matrix multiplication?

answered Jul 17, 2021 at 17:13

0 votes

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

answered Dec 23, 2020 at 21:30

0 votes

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

answered Apr 30, 2020 at 4:57

0 votes

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

answered Apr 30, 2020 at 20:31

0 votes

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What does this Set actually mean/contain?

answered Dec 8, 2020 at 13:39

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25 Answers

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

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

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

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

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

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

Trying to understand question in exercise about relations

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

Doing research as an undergraduate student

Is guessing person's name an NP problem example?

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 $u^r\in F$.

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

Definition of limits with absolute constant

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

Series convergence of function

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

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

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

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

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

What is the complexity of complex matrix multiplication?

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

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

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

What does this Set actually mean/contain?