Recent questions tagged tifrmaths2018

0 0 votes
0 0 answers
298
298 views
True/False Question :Let $G$ be a finite group with a normal subgroup $H$ such that $G/H$ has order $7$. Then $G\cong H\times G/H$.
0 0 votes
0 0 answers
260
260 views
True/False Question :The multiplicative group $\mathbb{F}_{7}^{\times }$ is isomorphic to a subgroup of the multiplicative group $\mathbb{F}_{31}^{\times }$.
1 1 vote
1 1 answer
331
331 views
True/False Question :Any linear transformation $A:\mathbb{R}^{4}\rightarrow \mathbb{R}^{4}$ has a proper non-zero invariant subspace.
3 3 votes
1 1 answer
320
320 views
True/False Question :Let $A, B \in M_{n}\left ( \mathbb{R} \right )$ be such that$A+B=AB$. Then $AB=BA$.
1 1 vote
1 1 answer
327
327 views
True/False Question :Let $A\in M_{n}\left ( \mathbb{R} \right )$ be upper triangular with all diagonal entries $1$ such that $A\neq I$. Then $A$ is not diagonalizable.
0 0 votes
0 0 answers
268
268 views
True/False Question :A countable group can have only countably many distinct subgroups.
0 0 votes
0 0 answers
248
248 views
True/False Question :There exists a continuous surjection from $\mathbb{R}^{3}-S^{2}$ to $\mathbb{R}^{2}-\left \{ \left ( 0,0 \right ) \right \}$ (here $S^{2}\subset \mat...
0 0 votes
0 0 answers
266
266 views
True/False Question :The permutation group $S_{10}$ has an element of order $30$.
0 0 votes
0 0 answers
303
303 views
True/False Question :Let $G$ be a finite group and $g \in G$ an element of even order. Then we can colour the elements of $G$ with two colours in such a way that $x$ and...
1 1 vote
1 1 answer
364
364 views
True/False Question :Let $f(x)$ and $g(x)$ be uniformly continuous functions from $\mathbb{R}$ to $\mathbb{R}$. Then their pointwise product $f(x)g(x)$ is uniformly conti...