user avatar
user avatar
user avatar
Rkb
  • Member for 3 years, 9 months
  • Last seen this week
4 votes
7 answers
1k views

If $G$ be a group of order $8$ and $x$ be a element of order $4$. Prove that $x^2 \in Z(G)$

3 votes
2 answers
1k views

Let $G$ be a non-abelian group of order $10$. Prove that G has a trivial center.

3 votes
3 answers
765 views

Prove that every group of order 15 is abelian? [duplicate]

3 votes
1 answer
239 views

How to plot the graph in polar coordinates of $r^2< \cos(2θ)$

3 votes
1 answer
46 views

$U$ be open , $a \in U$, does there exist a open set $A$ containing $a$, such that $\bar A \subset U$.

2 votes
3 answers
62 views

Prove or disprove that there is a element $y$ in $G$ such that , $y^2 = x$

2 votes
2 answers
260 views

A sufficient condition under which a continuous function on an *unbounded open interval* $I$ will be uniformly continuous on $I$

2 votes
2 answers
903 views

Volume of the region of sphere between two planes.

1 vote
0 answers
26 views

Region in the XY plane over which the double integral is taken.

1 vote
1 answer
59 views

The conjugate function $\overline{f(z)}$ has derivative $0$ w.r.t $z$.

1 vote
0 answers
158 views

Probability and statistics introductory reference.

1 vote
1 answer
271 views

Stereographic projection of a disc.

1 vote
0 answers
59 views

What is stochastic independence and how it is different from physical independence?

1 vote
1 answer
132 views

Dimension, graph of functions of several variable and it's visualization.

1 vote
1 answer
40 views

Calculate the volume of the region using triple integration.

1 vote
2 answers
428 views

Why vector space is named so?

1 vote
0 answers
117 views

To prove the $(\Bbb R , +)$ is isomorphic to $(\Bbb C , +)$ without using metric space? [duplicate]

1 vote
3 answers
16k views

Prove that the sequence (1+1/n)^n is convergent [duplicate]

1 vote
3 answers
70 views

Is this true $(a*b)^q =(c*d)^q \implies a*b=c*d?$ [closed]

1 vote
1 answer
62 views

If $A_1$ and $A_2$ are unitary matrices ,and if $CA_1C^{-1}=A_2$,then is $C$ is also unitary?

0 votes
3 answers
113 views

Does knowing how $5280$ is a product of primes help you to factor $5281$ as a product of primes?

0 votes
1 answer
41 views

$f$ is strictly increasing, $f (a) < a$, $ f(b) > b$. Number of solutions to $f(c) = c$. [closed]

0 votes
0 answers
255 views

Prerequisites for complex analysis by lars v ahlfors

0 votes
1 answer
60 views

What is the 3D region in this triple integral?