Question

Prove that every element in $\mathbb{Z}_{p} \setminus \left\{0\right\}$, $p$ prime has a multiplicative inverse

score 3.1k · Answer 1 · 2026-04-16 10:02:55

3.1k

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Prove that every element in $\mathbb{Z}_{p} \setminus \left\{0\right\}$, $p$ prime has a multiplicative inverse

Published on 16 Apr 2026 - 10:02

score 3.9k · Answer 2 · 2026-04-12 04:22:29

3.9k

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The union of Edge sets of distinct $u - v $ Path must contain a cycle.

Published on 12 Apr 2026 - 4:22

score 275 · Answer 3 · 2026-04-17 05:05:00

275

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If $f_n \to f$ uniformly from $[a,b] \to \Bbb R$, every $f_n$ is continuous and each $f_n$ has a zero, then $f$ has a zero.

Published on 17 Apr 2026 - 5:05

score 259 · Answer 4 · 2026-04-13 06:20:27

259

Views

Proof that a reflection in the plane preserves angle measure

Published on 13 Apr 2026 - 6:20

score 151 · Answer 5 · 2026-04-11 20:42:26

151

Views

Fixing a proof on triangles in graphs

Published on 11 Apr 2026 - 20:42

score 6.8k · Answer 6 · 2026-05-16 01:40:33

6.8k

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What is the explanation for this visual proof of the sum of squares?

Published on 16 May 2026 - 1:40

score 1k · Answer 7 · 2026-04-13 04:06:12

1k

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Tricky Proof of the Coefficients of the Zero Function Polynomial

Published on 13 Apr 2026 - 4:06

score 332 · Answer 8 · 2026-04-12 04:00:33

332

Views

Understanding a proof about the only normal subgroups of $S_5$

Published on 12 Apr 2026 - 4:00

score 1.1k · Answer 9 · 2026-04-14 19:55:36

1.1k

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How is $f(x)=\tan(x)$ bijective for $(-\frac{\pi}{2}, \frac{\pi}{2})$ and not for an unrestricted domain?

Published on 14 Apr 2026 - 19:55

score 92 · Answer 10 · 2026-04-14 08:33:21

92

Views

Showing the multi-variable limit exists using the epsilon-delta definition of a limit

Published on 14 Apr 2026 - 8:33

score 840 · Answer 11 · 2026-04-11 11:53:22

840

Views

Independence of two discrete random variables,

Published on 11 Apr 2026 - 11:53

score 75 · Answer 12 · 2026-04-21 20:30:17

75

Views

Can anyone help finish this proof? Induction proof $2^{n+2} \mid k^{2^n} -1$ for all $n \geq 1$ and odd $k$

Published on 21 Apr 2026 - 20:30

score 1.8k · Answer 13 · 2026-04-16 07:24:43

1.8k

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A Self Complementary Graph has a cut vertex iff it has a vertex of degree $1$

Published on 16 Apr 2026 - 7:24

score 102 · Answer 14 · 2026-04-15 16:26:30

102

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Prove that $2^x-\ln(x)=x$ iff $x$ is an odd integer?

Published on 15 Apr 2026 - 16:26

score 52 · Answer 15 · 2026-04-11 03:46:11

52

Views

Proof of multi-variable limit

Published on 11 Apr 2026 - 3:46

List Question

Prove that every element in $\mathbb{Z}_{p} \setminus \left\{0\right\}$, $p$ prime has a multiplicative inverse

The union of Edge sets of distinct $u - v $ Path must contain a cycle.

If $f_n \to f$ uniformly from $[a,b] \to \Bbb R$, every $f_n$ is continuous and each $f_n$ has a zero, then $f$ has a zero.

Proof that a reflection in the plane preserves angle measure

Fixing a proof on triangles in graphs

What is the explanation for this visual proof of the sum of squares?

Tricky Proof of the Coefficients of the Zero Function Polynomial

Understanding a proof about the only normal subgroups of $S_5$

How is $f(x)=\tan(x)$ bijective for $(-\frac{\pi}{2}, \frac{\pi}{2})$ and not for an unrestricted domain?

Showing the multi-variable limit exists using the epsilon-delta definition of a limit

Independence of two discrete random variables,

Can anyone help finish this proof? Induction proof $2^{n+2} \mid k^{2^n} -1$ for all $n \geq 1$ and odd $k$

A Self Complementary Graph has a cut vertex iff it has a vertex of degree $1$

Prove that $2^x-\ln(x)=x$ iff $x$ is an odd integer?

Proof of multi-variable limit

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