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H_1317
  • Member for 5 years, 6 months
  • Last seen more than a month ago
2 votes
Accepted

To find union of two sets consisting 2-tuples.

2 votes

Prove or disprove the existence of inverse element in $H=\{x=2k+1\}$ of the group $(\Bbb{Q}\setminus\{0\},\cdot)$

2 votes
Accepted

If $H$ and $K$ are subgroups of a group $G$ and if $|H|$ and $|K|$ are relatively prime, prove that $H\cap K=\{1\}$

1 vote

Is a matrix diagonalizable, if one of its eigenvalues is zero?

1 vote

A theorem in topology involving sequences

1 vote

Assume $N \triangleleft G$ Prove that if $[G:H]$ is a prime, then $G/N$ is cyclic. prove or disprove the converse of the first statement.

1 vote
Accepted

Proving that $\langle r \rangle$ is the only normal cyclic subgroup of $D_{2n}$ of index $2$

1 vote

Seeking a general example of $f \in S_G$ but $f \notin {\rm Aut}(G)$

0 votes

Set in a Metrizable Space is Closed

0 votes

Cardinality of $A$ and the Natural Numbers

0 votes

Give a transformation matrix with respect two bases, find the bases

0 votes

Graph Theory : trees, degrees and paths.

0 votes

Group theory : order of groups