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3SAT
  • Member for 9 years, 6 months
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  • Planet Earth
5 votes
2 answers
6k views

Finding subgroups of $\mathbb{Z}_{13}^*$

4 votes
2 answers
263 views

Subgroups of $\mathbb{Z}_{13}^*$ using "GAP language"

4 votes
4 answers
214 views

Is $\varphi:G\rightarrow G $ ,$\varphi(a)=a^{-1}$ homomorphism?

4 votes
1 answer
15k views

Evaluate $\oint_{C}(y-\sin x)dx+\cos x dy$

4 votes
3 answers
2k views

Evaluate $\iint_{R}(x^2+y^2)dxdy$

3 votes
0 answers
6k views

Finding the expected value and variance of ${X^3}$

3 votes
1 answer
86 views

How many words of length $7$ can we assemble if each letter should appear at least twice.

3 votes
2 answers
98 views

$H,N(H)$ are subgroups of $G$ show that $H\lhd N(H)$

3 votes
1 answer
79 views

Existence of isomorphism $\varphi:S_4\to \mathbb{Z}_8$

3 votes
1 answer
150 views

Finding subgroups of $\mathbb{Z}_{20}$

3 votes
3 answers
485 views

Show that $G/H\cong\mathbb{R}^*$.

3 votes
1 answer
173 views

Find the order of $\tau^{100}$

3 votes
2 answers
898 views

Finding order of $gag^{-1}$ in $G$ if $a^2=e\in G$

3 votes
3 answers
82 views

Express $\frac{1-x}{(x-1)^2+y^2}-\bigg(\frac{y}{(x-1)^2+y^2}\bigg)i$ in the form of $f(z)$

3 votes
1 answer
30 views

Why for the input: 'a' I'm getting 'Accept' in the automata

3 votes
4 answers
276 views

Finding the distribution law

3 votes
1 answer
63 views

Free context grammar for $\mathscr{L_1}=\{a^{3n}b^{5n}|n\geq0\}$

3 votes
2 answers
603 views

Prove that if $f(z)$ is a complex holomorphic function and $f'(z)=0$ so $f(z)$ is constant [duplicate]

3 votes
0 answers
69 views

Fliping a fair coin $3$ times

3 votes
3 answers
120 views

Prove that $\varphi(m)+ \tau(m)\leqslant m+1$

2 votes
1 answer
103 views

Picking cards from pack of $52$ cards

2 votes
0 answers
97 views

Building a "random rectangle"

2 votes
1 answer
58 views

$27$ balls into $3$ cells

2 votes
1 answer
47 views

Picking randomly one card till we get the first heart

2 votes
0 answers
63 views

Optimistics and pessimistics village

2 votes
1 answer
35 views

Why $\mathbb{P}(X>n)=q^n$ in geomtric distribution

2 votes
4 answers
106 views

Evaluate:$\int_{l}(z^2+\bar{z}z)dz$

2 votes
2 answers
5k views

If $f(z)$ analytic in the domain $D$ and $f'(z)=0$ so $f(z)=$constant?

2 votes
1 answer
78 views

Finding $\Re$ and $\Im$ of $e^{z^2}$

2 votes
1 answer
86 views

Writing a regular expertion for the language $L=\{0^n1^m \mid n\equiv m\pmod 2\}$

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