Cauchy's Sequence

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20

Why should we expect the connection between complex arithmetic and geometry?

Oct 9, 2020

5

Is Theory of ODEs by Coddington and Levinson still a good source for learning ODEs?

Aug 2, 2020

4

Constructive proof of Poincaré's inequality on convex domains

Jan 23

2

An elementary decomposition of a countably $\mathcal{H}^k$-rectifiable set

Sep 18

2

Can an atom of a measure be reduced to a single point in a complete separable metric space?

Oct 11

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6

Find the derivative of a difficult integral

Mar 19

2

Decomposition of a closed set into a perfect set and an at most countable set is unique.

Mar 19

2

Proof explanation: If $a\equiv b\pmod {p^n}$, then $a^p\equiv b^p\pmod {p^{n+1}}$

Mar 24

2

No identity for convolution (without Fourier)

Jun 17, 2022

1

If $f$ is a convex increasing function, then $\lim_{x\rightarrow -\infty} \frac{1}{x}\int_{x}^{x_0}f(t)dt=-\lim_{x\rightarrow -\infty}f(x)$

Jul 5, 2022

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definite-integrals

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derivatives

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epsilon-delta

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functions

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real-analysis

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Strong Law of Large Numbers for increasing index sets

+10

Constructive proof of Poincaré's inequality on convex domains

+25

$\{ f\in C[0,1]:\exists K: |f(x)|\leq Kx\}$ is closed

+10

Can we change the definition of negative exponents?

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