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Quinn Culver's user avatar
Quinn Culver's user avatar
Quinn Culver's user avatar
Quinn Culver
  • Member for 13 years
  • Last seen more than a month ago
  • Honolulu, HI, USA
38 votes

Can someone clearly explain about the lim sup and lim inf?

18 votes

Best Fake Proofs? (A M.SE April Fools Day collection)

15 votes

Prove by mathematical induction that $1 + 1/4 +\ldots + 1/4^n \to 4/3$

14 votes
Accepted

a.s. Convergence and Convergence in Probability

10 votes

Evaluate $ \binom{n}{0}+\binom{n}{2}+\binom{n}{4}+\cdots+\binom{n}{2k}+\cdots$

10 votes

How do you calculate this limit $\mathop {\lim }\limits_{x \to 0} \frac{{\sin (\sin x)}}{x}$?

10 votes

How to prove the sum of squares is minimum?

10 votes
Accepted

"Not converging" vs. diverging improper integral

9 votes
Accepted

Density of the set $S=\{m/2^n| n\in\mathbb{N}, m\in\mathbb{Z}\}$ on $\mathbb{R}$?

9 votes

How can you disprove the statement $4=5$?

7 votes

finite additivity condition

7 votes

How far can one get in analysis without leaving $\mathbb{Q}$?

7 votes

Are Continuous Functions Always Differentiable?

7 votes

Density of halting Turing machines

7 votes

How can I read numbers and mathematical symbols comfortably, at a university level?

6 votes

Solve $\sqrt{3}\tan\theta=2\sin\theta$

5 votes
Accepted

Can it be shown that the limit of a bounded sequence is no greater than the bounding value?

4 votes

Is there at least one irrational number with the property that it cannot be defined by a finite string of information?

4 votes

Are some real numbers "uncomputable"?

4 votes
Accepted

"Down-Closed", "Down Ideal", Something Else?

4 votes
Accepted

Example of a number that is not the limit of a computable sequence

4 votes

Lebesgue measure question on carefully-defined subset of $[0,1]$ and showing that it is measurable

4 votes
Accepted

Continuity of measure

4 votes

What exactly is nonstandard about Nonstandard Analysis?

4 votes

Let $g$ be a function from $(0, 1)$ to $\mathbb{R}$ and $\int_0^1 g^2(x)dx$ finite. Does this imply that $\int_0^1 g(x)dx$ is finite?

4 votes
Accepted

Is it possible to create a string with known Kolmogorov Complexity?

4 votes
Accepted

Proof of the Computability of Polynomials

4 votes

Decidability of Recursively Enumerable Languages

4 votes
Accepted

Logic question problem

4 votes

Logic counterexample to argument