List questions from proof-explanation

Published on 25 Mar 2026 - 17:45

42

Views

How should I use the alternate formula of the derivative to “mathematically” show that the derivative of $f(x)=|x-2|$ at $x=2$ does not exist?

Published on 15 Oct 2018 - 16:28

2k

Views

How many number of integer coordinates exists between a line segment, including the end points?

Published on 26 Mar 2026 - 4:50

223

Views

Prove that $1+a+a^2+...+a^n$ = $\frac{1-a^{n+1}}{1-a}$ for all $a\ne 1$.

Published on 15 Oct 2018 - 18:46

155

Views

If $G=\{1, a, b, c\}$ is a group and $|g|<4 \forall g\in G$, show the group is abelian.

Published on 28 Mar 2026 - 16:25

341

Views

Proving $x^2 - 4y^2 = 7$ has no natural numbers

Published on 17 Oct 2018 - 1:52

288

Views

Need of '$p$ is prime' in proof of Cauchy's theorem by McKay

Published on 01 Apr 2026 - 20:50

346

Views

The role of Axiom Schema of Replacement in the proof of Transfinite Recursion Theorem

Published on 25 Mar 2026 - 6:08

260

Views

Prove by induction $n! > n^2$ for $n \geq 4$

Published on 29 Mar 2026 - 9:10

65

Views

Is this a correct mathematical statement about integers mod n and congruence mod n?

Published on 25 Mar 2026 - 6:27

1.6k

Views

Language, Proof, and Logic Fitch Proof Exercise 6.16

Published on 17 Oct 2018 - 23:01

102

Views

Symbolic Logic Proof?

Published on 25 Mar 2026 - 9:33

71

Views

Proving Symbolic Logic

Published on 25 Mar 2026 - 12:13

238

Views

Prove Logic Using Hypothetical Reasoning

Published on 25 Mar 2026 - 12:13

227

Views

Prove Logic Using Proof of Contradiction

Published on 25 Mar 2026 - 10:52

List Question

Proof of Bellard's formula

How should I use the alternate formula of the derivative to “mathematically” show that the derivative of $f(x)=|x-2|$ at $x=2$ does not exist?

How many number of integer coordinates exists between a line segment, including the end points?

Prove that $1+a+a^2+...+a^n$ = $\frac{1-a^{n+1}}{1-a}$ for all $a\ne 1$.

If $G=\{1, a, b, c\}$ is a group and $|g|<4 \forall g\in G$, show the group is abelian.

Proving $x^2 - 4y^2 = 7$ has no natural numbers

Need of '$p$ is prime' in proof of Cauchy's theorem by McKay

The role of Axiom Schema of Replacement in the proof of Transfinite Recursion Theorem

Prove by induction $n! > n^2$ for $n \geq 4$

Is this a correct mathematical statement about integers mod n and congruence mod n?

Language, Proof, and Logic Fitch Proof Exercise 6.16

Symbolic Logic Proof?

Proving Symbolic Logic

Prove Logic Using Hypothetical Reasoning

Prove Logic Using Proof of Contradiction

Trending Questions

Popular # Hahtags

Popular Questions