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user398623
  • Member for 7 years, 2 months
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4 votes
1 answer
233 views

Does there exist such a positive integer?

4 votes
1 answer
548 views

Trace $A$ is an integer.

3 votes
3 answers
374 views

Books that gives geometric interpretation of topology.

3 votes
2 answers
2k views

A concern about the book Algebraic Topology by Fulton

2 votes
1 answer
311 views

Non-existence of non-trivial clopen set in $\mathbb R$ without using connectedness [duplicate]

2 votes
0 answers
255 views

Books on norms and $l_{p}$ spaces

1 vote
0 answers
23 views

Some reference on quadratic rings or introductory algebraic number theory. [duplicate]

1 vote
4 answers
258 views

Does this uncountable set of $\mathbb{R}\times\mathbb{R}$ contain a dense set?

1 vote
1 answer
51 views

A problem from elementary number theory

1 vote
0 answers
31 views

Is the operator invertible? [duplicate]

1 vote
1 answer
1k views

Proof of the fundamental theorem of arithmetic.

1 vote
1 answer
307 views

Fields and Galois theory. [duplicate]

1 vote
1 answer
158 views

There exists $n$ such that there exists an n-digit number M for which $M(10^n + 1)$ is a perfect square.

1 vote
2 answers
37 views

How to find the polynomial?

0 votes
1 answer
1k views

Books on Number Systems

0 votes
1 answer
128 views

A question on direct product of groups

0 votes
1 answer
137 views

A better solution for an old problem [duplicate]

0 votes
1 answer
104 views

For what values of ''$a$'' , does this Improper Integral converges? [duplicate]

0 votes
2 answers
138 views

How to show $f(x)$ is Riemann integrable?

0 votes
1 answer
965 views

A random trigonometry problem

0 votes
1 answer
251 views

A problem about the median of a triangle.