User Kaish - Mathematics Stack Exchange

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	2,026 reputation	bio	website		visits	member for	10 months
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1

10

votes

11

answers

1

kviews

How do we know all numbers alternate between odd and even numbers?

elementary-number-theory proof-writing

apr 28 at 20:35 Kaish 2,026

1

7

votes

4

answers

94

views

Find what values of $n$ give $\varphi(n) = 10$

number-theory

may 24 at 23:25 wendy.krieger 493

2

6

votes

5

answers

267

views

Is there a quick way to solve $3^8 \equiv x \mod 17$?

elementary-number-theory

jan 11 at 0:10 N. S. 30.6k

3

5

votes

3

answers

143

views

Self teaching Galois Theory

abstract-algebra reference-request soft-question galois-theory

jun 12 at 20:51 Justen Bieber 484

5

votes

3

answers

91

views

How is $x^2 + x + 1$ reducible in $\mathbb{Z}_3[x]$?

number-theory

apr 10 at 10:37 Kaish 2,026

5

votes

4

answers

181

views

How to solve $a\cos^2(\theta) + b \sin^2(\theta) = 0$ for $\theta$

homework algebra-precalculus

mar 20 at 15:17 Henry T. Horton 8,099

1

5

votes

3

answers

259

views

Show that every group $G$ of order $175$ is abelian and list all isomorphism types of these groups

abstract-algebra group-theory

jan 10 at 0:42 amWhy 61.7k

5

votes

7

answers

309

views

Intuitive definitions of the Orbit and the Stabilizer

abstract-algebra group-theory

dec 8 at 0:56 amWhy 61.7k

4

votes

3

answers

84

views

Questions on the proof of “If you switch two rows on a matrix, then $\det(B) = - \det(A)$”

linear-algebra proof-writing

apr 25 at 0:21 Peter Tamaroff 28.8k

4

votes

1

answer

52

views

Calculating the sign of the generalised permutation

permutations permutation-groups

apr 20 at 16:35 boohoo 1

4

votes

2

answers

52

views

How to factorise a polynomial in the ring $\mathbb{Z}_p[x]$

homework number-theory

apr 14 at 18:33 Hurkyl 22.2k

1

4

votes

1

answer

49

views

For $1 \leq q < p \leq 8$, identify which $p^2 + q^2$ is not prime (Pythagorean Triples)

homework number-theory

apr 13 at 22:12 Berci 22.3k

4

votes

1

answer

61

views

Write down the equation of the tangent plane and compute the Taylor series of the function

homework differential-topology taylor-expansion

mar 6 at 16:29 Glougloubarbaki 2,371

4

votes

1

answer

29

views

Determinant of the matrix $D_n(2,3,1)$

homework geometry determinant

feb 11 at 22:01 Berci 22.3k

4

votes

2

answers

124

views

Where have I made my mistake in calculating $P^{-1}AP$?

linear-algebra matrices

jan 9 at 0:54 Jack 7,601

1

4

votes

4

answers

155

views

Proving the stabilizer is a subgroup of the group to prove the Orbit-Stabiliser theorem

abstract-algebra group-theory proof-strategy

dec 27 at 15:54 Babak S. 31.5k

4

votes

3

answers

138

views

Matrix P to the power of 4, i.e $P^4$, is this the same as $P^2 \cdot P^2$?

linear-algebra matrices

dec 24 at 22:59 alex.jordan 9,587

11

3

votes

17

answers

2

kviews

Can we get just $3$ from $\pi$? [closed]

soft-question

may 24 at 18:59 Kaish 2,026

3

votes

1

answer

92

views

Different form of determinant, does it make mine wrong?

homework linear-algebra determinant

may 4 at 22:10 bluemoon 115

3

votes

1

answer

40

views

What does it mean for the determnant of a matrix to be independent of the vector space

linear-algebra definition

apr 21 at 15:37 Mud 163

3

votes

0

answers

43

views

Use the ring ${\bf{O}}[\sqrt5]$ to show that $2$ is irreducible in $\mathbb{Z}[\sqrt5]$

homework abstract-algebra number-theory

apr 19 at 19:19 YACP 9,939

1

3

votes

1

answer

82

views

Using Fermats Little Theorem to show $2^{17} -1$ is prime

elementary-number-theory prime-numbers modular-arithmetic

apr 19 at 11:29 Hagen von Eitzen 47.4k

3

votes

4

answers

108

views

Solve $\frac{1}{2x}+\frac{1}{2}\left(\frac{1}{2x}+\cdots\right)$

algebra-precalculus summation

apr 3 at 1:25 Fly by Night 6,340

3

votes

4

answers

125

views

Where have I made my mistake in my integrating $\int x \sqrt{2x - 1} dx$?

algebra-precalculus integral

mar 28 at 23:26 amWhy 61.7k

1

3

votes

2

answers

75

views

If $(\pm x)^2 = X$ then $\sqrt{X} = x$?

algebra-precalculus

mar 27 at 16:52 Kaish 2,026

1

3

votes

1

answer

39

views

Find point $X$ such that line through plane $E$ and sphere $S$ meet at $(0,0,1)$ (stereographic projection)

homework linear-algebra differential-geometry

feb 23 at 21:31 adam W 3,215

2

3

votes

4

answers

184

views

Show that every integer can be written in the form $5a + 7b$ for $a,b \in \mathbb{Z}$

homework number-theory

feb 5 at 23:38 Brian M. Scott 162k

3

votes

3

answers

135

views

Is there a way to get all the permutations of $S_4$

group-theory permutations determinant

feb 2 at 20:13 Michael Hardy 51.2k

3

votes

1

answer

788

views

How to make two vectors orthogonal?

linear-algebra

jan 11 at 23:08 dr jimbob 588

1

3

votes

4

answers

128

views

What's the quickest way to solve $3^i \equiv 1 \mod 28$

elementary-number-theory

jan 11 at 8:17 lab bhattacharjee 32.7k

Kaish

180 Questions