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Apparently, this user prefers to keep an air of mystery about them.

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  • Kolkata, West Bengal, India
  • Member for 3 years, 11 months
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  • Last seen Jun 28 '20 at 23:04

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16 Does there exist an infinite non-abelian group such that all of its proper subgroups become cyclic? Jun 17 '17
13 Given a matrix group, how to determine whether its connected , dense etc. Dec 29 '17
10 Subgroups of $(\mathbb R, +)$ are either dense or cyclic. Jun 17 '17
8 For general $n \in \Bbb N$ , how to determine all groups (both finite and infinite) having exactly $n$ conjugacy classes? Feb 24 '18
7 Homomorphisms from $(\Bbb Q,+)$ to $(\Bbb Q,+)$ and from $(\Bbb Q^*,\cdot)$ to $(\Bbb Q^*,\cdot)$ Feb 6 '18
7 Let $f : \Bbb R \to \Bbb R$ be a function . What can be said about the set of points where $f$ is not differentiable? [duplicate] Jan 5 '18
6 Find matrices that commute with $\operatorname{Diag}(1,1,-1)$. Jun 23 '18
6 $\Bbb R[X,Y]/(F) \cong \Bbb R[Z]$ and $F_X G_Y - G_X F_Y \in \Bbb R^*$ Aug 26 '18
6 Properties of an enumeration of $\mathbb{Q}$ Dec 29 '17
5 Finding all the maximal ideals of $C([0,1])$ and also prime ideals in it which are not maximal Apr 18 '18
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