List questions from induction

Published on 05 May 2026 - 10:43

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Fake induction, can't find flaw, every graph with zero edges is connected

Published on 07 May 2026 - 10:09

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Prove that any truth function $f$ can be represented by a formula $φ$ in cnf by negating a formula in dnf

Published on 05 May 2026 - 6:56

584

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Prove $\sum^{n}_{i=1}\binom{n}{i}i=n2^{n-1}$ using binomial and induction

Published on 07 May 2026 - 11:27

180

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Induction proof of Fibonacci numbers

Published on 05 May 2026 - 16:14

403

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The Martian Monetary System

Published on 05 May 2026 - 3:50

137

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How to format a proof by induction

Published on 05 May 2026 - 12:00

544

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$x+\frac{1}{x}$ is an integer

Published on 07 May 2026 - 10:08

1.3k

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Help with induction proof please! For an integer $n, 3$ divides $n^3-n$

Published on 10 May 2026 - 10:15

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Proving $\sum_{k=1}^n kk!=(n+1)!−1$

Published on 05 May 2026 - 13:48

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Can you help to prove this equation by induction

Published on 29 Apr 2026 - 12:16

144

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Is this : $\sqrt{3+\sqrt{2+\sqrt{3+\sqrt{2+\sqrt{\cdots}}}}}$ irrational number?

Published on 05 May 2026 - 17:51

58

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How can i prove that for any $ n \geq 1$ exist that (a is natural): $ 3^{(3^n)} + 8 = 7a$?

Published on 05 May 2026 - 21:05

124

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What does $\sum_{k=1}^{n}k=\frac{n(n+1)}{2}$ mean in induction?

Published on 07 May 2026 - 19:02

125

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How can I prove that $7+7^2+7^3+...+7^{4n} = 100*a$ (while a is natural number)?

Published on 07 May 2026 - 13:37

List Question

Show that the sequence is bounded below 3

Fake induction, can't find flaw, every graph with zero edges is connected

Prove that any truth function $f$ can be represented by a formula $φ$ in cnf by negating a formula in dnf

Prove $\sum^{n}_{i=1}\binom{n}{i}i=n2^{n-1}$ using binomial and induction

Induction proof of Fibonacci numbers

The Martian Monetary System

How to format a proof by induction

$x+\frac{1}{x}$ is an integer

Help with induction proof please! For an integer $n, 3$ divides $n^3-n$

Proving $\sum_{k=1}^n kk!=(n+1)!−1$

Can you help to prove this equation by induction

Is this : $\sqrt{3+\sqrt{2+\sqrt{3+\sqrt{2+\sqrt{\cdots}}}}}$ irrational number?

How can i prove that for any $ n \geq 1$ exist that (a is natural): $ 3^{(3^n)} + 8 = 7a$?

What does $\sum_{k=1}^{n}k=\frac{n(n+1)}{2}$ mean in induction?

How can I prove that $7+7^2+7^3+...+7^{4n} = 100*a$ (while a is natural number)?

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