User vujazzman

18 votes

Accepted

What's the correct definition of "conjugate", and do we identify them?

answered Oct 17, 2019 at 3:27

9 votes

Does $f$ being continuous, differentiable imply $f'$ is continuous

answered Oct 17, 2019 at 4:19

5 votes

If $k$ is the smallest integer such that $[a^k]>[a]^k$, which of the following is true?

answered Oct 27, 2019 at 19:27

5 votes

Accepted

How to make sense of the simple optimization problem $\min_{x,y} x^2+y^2$?

answered Oct 28, 2019 at 20:20

5 votes

Why is a polynomial defined the way that it is defined?

answered Oct 11, 2019 at 4:44

4 votes

Inverse element of $x^2 + x + 1$ in $\mathbb Z_2[x]/\langle x^3 + x + 1\rangle$

answered Oct 15, 2019 at 6:32

4 votes

Find a formula for c(n, n − 2).

answered Feb 21, 2020 at 3:24

3 votes

Accepted

Image of the Veronese is defined by $X_I X_J=X_k X_L=0$

answered Oct 9, 2019 at 5:26

3 votes

Accepted

Give a sentence that's valid for a model whose universe has $n$ elements iff $n$ is even?

answered Oct 15, 2019 at 18:51

3 votes

Sample all elements from a set at least once, with replacement

answered Oct 16, 2019 at 21:36

3 votes

What is $\mathbb{Q}(\pi^2) \cap \mathbb{Q}(\pi^2-\pi)??$

answered Dec 2, 2020 at 4:35

2 votes

Accepted

$\operatorname{GL}_n(k)/k^\times \cong\operatorname{SL}_n(k)$

answered Feb 20, 2021 at 5:28

2 votes

If $2X+3Y\le5$ and $3X+Y\ge10$, how do we formally prove that $2X+3Y+10\le 5+3X+Y$?

answered Dec 21, 2019 at 1:22

2 votes

Proving a multiplicative group module n is generated in a handy way

answered Apr 2, 2020 at 20:10

2 votes

Accepted

Swing analysis of a cricketing shot

answered Aug 10, 2020 at 18:09

2 votes

Logical Fallacies: When proving the claim requires the assertion of the claim

answered Oct 16, 2019 at 22:22

2 votes

Geometric Interpretation of eigen values to matrix definitness

answered Oct 17, 2019 at 4:46

2 votes

Why are normal unit vectors in a different direction than acceleration vectors?

answered Oct 19, 2019 at 5:01

2 votes

Prove that the following matrix exists.

answered Oct 8, 2019 at 1:14

2 votes

Accepted

Consider $\{a+b \sqrt[3]2+c (\sqrt[3]{2})^2:a,b,c ∈\Bbb{Q}\}$. Show that this set is a field

answered Oct 8, 2019 at 2:36

2 votes

All magmas of order n (specifically 3)

answered Oct 27, 2019 at 23:53

2 votes

Accepted

Essential singularity of a holomorphic function of two variables

answered Apr 2, 2020 at 21:34

2 votes

Accepted

Miller's Test Base a

answered Oct 28, 2019 at 1:27

1 vote

If $N$ is the least normal subgroup of $AB$ containing $A$, then $(AB)/N \cong B$.

answered Apr 1, 2020 at 19:18

1 vote

Special linear group as submanifold.

answered Oct 29, 2019 at 6:22

1 vote

why here $x^2$ is used ? why not $x ?$

answered Oct 27, 2019 at 17:54

1 vote

Accepted

Find one primitive root of $\pmod{43^{63}}$

answered Oct 19, 2019 at 7:33

1 vote

$|(\frac{1}{a_1}+\frac{1}{a_2}+\cdots+\frac{1}{a_k})- (\frac{1}{b_1}+\frac{1}{b_2}+\cdots+\frac{1}{b_k})|<\frac{1}{3000}$

answered Oct 8, 2019 at 22:31

1 vote

Longest consecutive runs of sums of $k$-subsets of first $n$ primes

answered Oct 8, 2019 at 1:34

1 vote

How many solutions to $a^{(p-1)/2} \equiv 1 (p)$

answered Oct 13, 2019 at 21:00

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46 Answers

What's the correct definition of "conjugate", and do we identify them?

Does $f$ being continuous, differentiable imply $f'$ is continuous

If $k$ is the smallest integer such that $[a^k]>[a]^k$, which of the following is true?

How to make sense of the simple optimization problem $\min_{x,y} x^2+y^2$?

Why is a polynomial defined the way that it is defined?

Inverse element of $x^2 + x + 1$ in $\mathbb Z_2[x]/\langle x^3 + x + 1\rangle$

Find a formula for c(n, n − 2).

Image of the Veronese is defined by $X_I X_J=X_k X_L=0$

Give a sentence that's valid for a model whose universe has $n$ elements iff $n$ is even?

Sample all elements from a set at least once, with replacement

What is $\mathbb{Q}(\pi^2) \cap \mathbb{Q}(\pi^2-\pi)??$

$\operatorname{GL}_n(k)/k^\times \cong\operatorname{SL}_n(k)$

If $2X+3Y\le5$ and $3X+Y\ge10$, how do we formally prove that $2X+3Y+10\le 5+3X+Y$?

Proving a multiplicative group module n is generated in a handy way

Swing analysis of a cricketing shot

Logical Fallacies: When proving the claim requires the assertion of the claim

Geometric Interpretation of eigen values to matrix definitness

Why are normal unit vectors in a different direction than acceleration vectors?

Prove that the following matrix exists.

Consider $\{a+b \sqrt[3]2+c (\sqrt[3]{2})^2:a,b,c ∈\Bbb{Q}\}$. Show that this set is a field

All magmas of order n (specifically 3)

Essential singularity of a holomorphic function of two variables

Miller's Test Base a

If $N$ is the least normal subgroup of $AB$ containing $A$, then $(AB)/N \cong B$.

Special linear group as submanifold.

why here $x^2$ is used ? why not $x ?$

Find one primitive root of $\pmod{43^{63}}$

$|(\frac{1}{a_1}+\frac{1}{a_2}+\cdots+\frac{1}{a_k})- (\frac{1}{b_1}+\frac{1}{b_2}+\cdots+\frac{1}{b_k})|<\frac{1}{3000}$

Longest consecutive runs of sums of $k$-subsets of first $n$ primes

How many solutions to $a^{(p-1)/2} \equiv 1 (p)$