Mathematics
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user432019
  • Member for 6 years, 8 months
  • Last seen more than 4 years ago
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All Questions Answers
Score Newest
question
6
How to prove $AB = \{xy \in \mathbb R : x \in A, y \in B\}$ is an open set?
Apr 5, 2017
question
3
Show that if A is a open set or a closed set, then $int(\partial A) = \emptyset$. Also find if the converse is true.
Apr 23, 2017
question
3
Proof verification : $f$ is increasing at $x_0$.
May 22, 2017
question
2
Show $\lim_n(x_{n+1} - x_n) = 0$ if $<x_n>$ satisfies $2x_n \le x_{n-1} + x_{n+1}$ for all $n \in \mathbb N$
Apr 12, 2017
question
2
Proof verification : Prove set A is a bounded closed set.
Apr 22, 2017
question
1
interior points and limit points of $\{(x,y): x^2+2y^2 < 1\}$
Apr 5, 2017
question
1
Is the set of real numbers between 0 and 1 which only have 1 and 5 in their decimal representation, closed?
Apr 26, 2017
question
1
Proof verification : Closure of the graph of $f(x) = \sin(1/x)$ is not a path connected set.
May 8, 2017
question
1
Why $g(a,b) = \|a-b\|$ is continuous?
May 21, 2017
question
1
The function that $\lim_{n \to \infty} f(n+x) = 0$, but $\lim_{x \to \infty} f(x) \neq 0$?
May 21, 2017

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