List questions from proof-verification

Published on 14 Apr 2026 - 23:13

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Simplex is closed

Published on 12 Apr 2026 - 16:25

285

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Order of Set Operations

Published on 13 Apr 2026 - 11:30

28

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Is this solution for a equation above 2nd degree correct?

Published on 11 Apr 2026 - 16:22

707

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Proof verification: the image of a continuous function on a connected domain is itself connected.

Published on 11 Apr 2026 - 1:05

97

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Is the space $\mathbb{N}$ is a baire spaces ? yes/No

Published on 12 Apr 2026 - 8:51

93

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proving that a group of order 60 is simple using homomorphisms.

Published on 25 Mar 2026 - 9:38

380

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Multiplying conditionally convergent series. Is this valid?

Published on 25 Mar 2026 - 3:18

84

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Double checking a coefficient for a Laurent series, the series for $f(z) = \frac{z^2 + 1}{(z - i)^2}dz$

Published on 15 Apr 2026 - 19:30

87

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Alternative proof of $\gcd(a,b)\mid\text{lcm}(a,b)$

Published on 12 Apr 2026 - 12:33

189

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Supremum and infimum of a set

Published on 16 Apr 2026 - 15:56

161

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Proof by Ordinary Induction: Every set of positive integers that contains an integer less than or equal to $n$ must have a smallest element

Published on 13 Apr 2026 - 1:06

42

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Not solutions to a equation

Published on 09 Apr 2026 - 18:43

194

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Global extrema for $\frac{(q^k-1)(q^{k+1}-2q^k+1)}{{q^k}(q-1)(q^{k+1}-1)}$?

Published on 17 Apr 2026 - 14:52

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$f:[0,1] \times [0,1] → \mathbb R$ is continuous. Prove that $g(x) = \max\{f(x,y) : y \in [0,1]\}$ is defined and continuous.

Published on 14 Apr 2026 - 15:18

List Question

Find particular solution of $u''+2u'+u=9x^2e^{-x}$

Simplex is closed

Order of Set Operations

Is this solution for a equation above 2nd degree correct?

Proof verification: the image of a continuous function on a connected domain is itself connected.

Is the space $\mathbb{N}$ is a baire spaces ? yes/No

proving that a group of order 60 is simple using homomorphisms.

Multiplying conditionally convergent series. Is this valid?

Double checking a coefficient for a Laurent series, the series for $f(z) = \frac{z^2 + 1}{(z - i)^2}dz$

Alternative proof of $\gcd(a,b)\mid\text{lcm}(a,b)$

Supremum and infimum of a set

Proof by Ordinary Induction: Every set of positive integers that contains an integer less than or equal to $n$ must have a smallest element

Not solutions to a equation

Global extrema for $\frac{(q^k-1)(q^{k+1}-2q^k+1)}{{q^k}(q-1)(q^{k+1}-1)}$?

$f:[0,1] \times [0,1] → \mathbb R$ is continuous. Prove that $g(x) = \max\{f(x,y) : y \in [0,1]\}$ is defined and continuous.

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