User okie

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Prove sum of the lengths of intervals in a finite covering of $\mathbb{Q}\cap [0,1]$ is $\geq 1$

answered Oct 13, 2015 at 2:32

4 votes

Hopf Bifurcation of Reaction-Diffusion System

answered Jul 14, 2015 at 16:09

2 votes

Union of one set of outer measure zero and one set of outer measure $\geq 0$ has outer measure zer0.

answered Oct 13, 2015 at 6:52

1 vote

Vertical Asymptote Trigonometry Question

answered Jul 16, 2020 at 20:34

1 vote

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Phase plane analysis

answered Oct 28, 2015 at 22:56

1 vote

Lotka-Volterra predator-prey model eigenvalue

answered Dec 9, 2015 at 18:36

1 vote

Proving that a set is not compact directly from the definition

answered Feb 14, 2016 at 21:58

1 vote

Simple proof by contradiction

answered Jul 16, 2015 at 5:22

1 vote

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Proving $10^n \equiv 1 \pmod 3$ for all $n\geq 1$ by induction

answered Apr 17, 2015 at 1:25

1 vote

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Elementary properties of $\sigma$ algebra

answered Oct 5, 2015 at 18:45

1 vote

Help with Relations and Functions?

answered Oct 6, 2015 at 3:06

0 votes

Equilibrium point of a linear second order equation with constants

answered Oct 18, 2015 at 0:43

0 votes

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Semidirect Product Definition of Addition

answered Nov 6, 2014 at 20:31

0 votes

The sin in a fundamental System of Solutions

answered Sep 8, 2015 at 22:05

0 votes

Convert $\lim\limits_{n \to \infty} \sum_{k=1}^n \frac{4}{n}\sqrt{2+\frac{4k}{n}}$ into a definite integral.

answered Jul 28, 2020 at 3:28

-1 votes

Let $A,B \subset \mathbb R$ with $m^(A)=0$. Prove $m^(A \cup B)=m^*(B).$

answered May 21, 2016 at 17:22

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16 Answers

Prove sum of the lengths of intervals in a finite covering of $\mathbb{Q}\cap [0,1]$ is $\geq 1$

Hopf Bifurcation of Reaction-Diffusion System

Union of one set of outer measure zero and one set of outer measure $\geq 0$ has outer measure zer0.

Vertical Asymptote Trigonometry Question

Phase plane analysis

Lotka-Volterra predator-prey model eigenvalue

Proving that a set is not compact directly from the definition

Simple proof by contradiction

Proving $10^n \equiv 1 \pmod 3$ for all $n\geq 1$ by induction

Elementary properties of $\sigma$ algebra

Help with Relations and Functions?

Equilibrium point of a linear second order equation with constants

Semidirect Product Definition of Addition

The sin in a fundamental System of Solutions

Convert $\lim\limits_{n \to \infty} \sum_{k=1}^n \frac{4}{n}\sqrt{2+\frac{4k}{n}}$ into a definite integral.

Let $A,B \subset \mathbb R$ with $m^(A)=0$. Prove $m^(A \cup B)=m^*(B).$