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John.Doh
  • Member for 6 years, 6 months
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4 votes
1 answer
96 views

$ {\limsup\limits_{n\to \infty}}(\inf_\limits{x \in X}{f_{n}(x)}) \leqslant \inf_\limits{x \in X} ({\limsup\limits_{n\to \infty}} f_{n}(x))$

2 votes
4 answers
158 views

Why is $a_{1} > 0 \land a_{n+1}=a_{n}+\frac{1}{a_{n}}$ unbounded? [duplicate]

1 vote
1 answer
414 views

Using Steffensen's method trying to prove $ \phi ' ( x ^ * ) = 0 $

0 votes
3 answers
83 views

Question about a proof that the eigenvalues of an $n \times n$ orthogonal matrix are $\pm 1$

0 votes
2 answers
509 views

Prove the inverse of a nonnegative matrix is nonnegative

0 votes
1 answer
109 views

Positive definite matrix properties

0 votes
0 answers
138 views

Can a Borel Measurable function be surjective?

0 votes
1 answer
84 views

example of stochastic integral

0 votes
2 answers
44 views

Find the sum of $\sum_{k=2}^\infty x^k (1-x)$

0 votes
1 answer
18 views

Proving an iIf a function $f: [a,b] -> \mathbb{R}$ is differentiable, then for random $c, c' \in [a,b]$ntegral property

0 votes
3 answers
91 views

Find the limit of $\frac{1}{x} \cdot \int_{0}^{x}(1+\sin(t))^\frac{1}{t}dt$ [duplicate]

0 votes
0 answers
34 views

Find a limit using a functions integral sums

-1 votes
3 answers
399 views

Determine the convergence of $\sum\limits_{k=1}^{\infty}\sqrt k - 2\sqrt {k + 1} + \sqrt {k + 2} $ [duplicate]

-1 votes
3 answers
193 views

How do I show a sequence is strictly decreasing