List questions from proof-explanation

Published on 17 Mar 2026 - 10:47

68

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What is the guarentee of existence of the differentiable function $t=\phi(t^{*})$ in the proof?

Published on 24 Mar 2026 - 22:08

367

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Discrete Math - If two natural numbers divide each other, then they are equal

Published on 22 Jan 2018 - 16:44

1.3k

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infimum implies existence of a sequence

Published on 22 Mar 2026 - 20:23

583

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Question on proof of Erdos and Szekeres

Published on 23 Mar 2026 - 9:52

47

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Insight on why this equality may be true

Published on 22 Mar 2026 - 11:54

1.3k

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Trouble Understanding the Proof of the limit of Thomae's Function in $(0,1)$ is $0$

Published on 20 Mar 2026 - 1:25

35

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why do these inequalities hold?

Published on 24 Mar 2026 - 23:51

172

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Questions about a proof of the existence of the Lagrange polynomial

Published on 23 Mar 2026 - 9:42

77

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Different definitions of Natural Numbers and Proof by Contradiction

Published on 22 Mar 2026 - 0:45

99

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General formula for natural power summation

Published on 24 Mar 2026 - 2:24

183

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Why does the outer function $f$ of $f(g(x))$ have to be continuous?

Published on 24 Jan 2018 - 16:12

48

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Geometric Proof for Quadrilateral

Published on 16 Mar 2026 - 23:00

52

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Why are there different unequal limits for this functor?

Published on 25 Mar 2026 - 1:34

157

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Trouble with a proof. I cannot prove this without inf many proofs for each and every case.

Published on 19 Mar 2026 - 23:09

List Question

step in proof Spivak about partition of unity

What is the guarentee of existence of the differentiable function $t=\phi(t^{*})$ in the proof?

Discrete Math - If two natural numbers divide each other, then they are equal

infimum implies existence of a sequence

Question on proof of Erdos and Szekeres

Insight on why this equality may be true

Trouble Understanding the Proof of the limit of Thomae's Function in $(0,1)$ is $0$

why do these inequalities hold?

Questions about a proof of the existence of the Lagrange polynomial

Different definitions of Natural Numbers and Proof by Contradiction

General formula for natural power summation

Why does the outer function $f$ of $f(g(x))$ have to be continuous?

Geometric Proof for Quadrilateral

Why are there different unequal limits for this functor?

Trouble with a proof. I cannot prove this without inf many proofs for each and every case.

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