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Supriyo Halder's user avatar
Supriyo Halder's user avatar
Supriyo Halder's user avatar
Supriyo Halder
  • Member for 7 years, 1 month
  • Last seen more than 1 year ago
  • Baidyabati, West Bengal, India
9 votes
Accepted

How do we compute Aut(Z2 x Z2)?

3 votes

Show $H$ is the only subgroup in $G$ of index 2, when $|G| \not = 4$ and $[G:H]=2$

3 votes
Accepted

Homomorphism between $\mathbb C^*$ and $S_n$

3 votes
Accepted

Prooving that $sign(x)=1$(?)

3 votes

A group of order $n^2$ with $n+1$ subgroups of order $n$ with trivial intersection is abelian

3 votes

Number of ways to choose mathematicians and computer scientists for a team

2 votes

A theorem about the Floor function

2 votes
Accepted

Is the set $f=\{(x^3,x):x\in\mathbb R\}$ a function from $\mathbb R$ to $\mathbb R$?

2 votes

Show unit circle under multiplication not isomorphic to either the nonzero real numbers under multiplication or real numbers under addition

2 votes

Group Isomorphic to $(\mathbb{Z} \times \mathbb{Z})/ \langle(a,b),(c,d)\rangle$

2 votes

A new number system: Remainder numbers

2 votes

For $n\geq 3$ there exist $x,y\in S_n$ such that $x$ and $y$ have order $2$ and $xy$ has order $n$.

1 vote

Element of order $2$ in $A_n$

1 vote

Finding same equivalence classes for $(x,y) \in R \iff x-y \in \mathbb{Z}$

1 vote

Elements which have only a finite number of conjugates in a group is a characterstic group.

1 vote

For which integers $n, 3\leq n\leq 11$ is there only one group of order $n$

1 vote

Computation in a Permutation Group

1 vote

All the generators of given order

1 vote

Difference between the group $C_4$ and $Z_4$?

1 vote

What would be the Nth number?

1 vote

Can I Systematically Determine the Cardinality of a Finite Set?

1 vote

Why is the number of surjective functions from an $n$-element set to a $k$-element set not given by $n^k$?

1 vote

An $n×n$ chart, where n≥4 with "+","−" signs

1 vote

Subgroup of particular order.

1 vote

Let $H$ be a nontrivial subgroup of rationals under addition. Prove that $H$ has a nontrivial proper subgroup

1 vote

In how many distinguishable ways can the yogurts be stored in the box?

1 vote

Four equal circles intersect: What is the area of the small shaded portion and its height

0 votes

Question about countable sets from Rudin's Analysis book

0 votes

How many ways can you arrange $n$ indistinguishable objects in $k$ distinguishable positions? (with $n\le k$)

0 votes

Let $G = {5, 15, 25, 35}$. Prove that $G$ is a group under multiplication modulo $40$. (Without using Cayley Table)