List questions from proof-explanation

Published on 11 Apr 2026 - 12:18

266

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Proof: If $G$ is connected and $rad(G) \leq k \leq diam(G)$, then there exists a vertex $v \in V(G)$ such that $e(v)=k$.

Published on 16 Apr 2026 - 9:52

34

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Help Understanding Proof Involving Formal Power Series

Published on 26 Mar 2026 - 4:50

36

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A little doubt related to Continuity

Published on 17 Apr 2026 - 13:29

64

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Why the linear functional $\mu$ at the last line unbounded?

Published on 14 Apr 2026 - 19:18

230

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Alternative characterization of lim sup or lim inf. Proof explanation

Published on 12 Apr 2026 - 18:40

96

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Contrapositive/contradiction proofs and why do they work

Published on 14 Apr 2026 - 7:14

101

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Show boundedness of $\lim\limits_{n \to \infty}(1+\frac{x}{n})^n$

Published on 14 Apr 2026 - 3:18

151

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Computation of the fundamental groupoid of the cicrle - tom Dieck, Algebraic Topology

Published on 29 Apr 2026 - 1:51

331

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The product $\prod_{j\in J}X_j$ is connected iff $X_j$ is connected for each $j\in J$

Published on 15 Apr 2026 - 8:43

33

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To show that $\mu$ is determinate through a condition from a note

Published on 25 Mar 2026 - 9:25

108

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What delta do you specify in $\epsilon$-$\delta$ formula

Published on 09 Apr 2026 - 20:04

793

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How does this proof by induction works?

Published on 10 Apr 2026 - 17:20

71

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Calculating a product of 3-cycles

Published on 13 Apr 2026 - 10:35

137

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Representation of an involution operator with an operator matrix

Published on 13 Apr 2026 - 14:35

List Question

Understanding an application of the Cauchy–Schwarz inequality

Proof: If $G$ is connected and $rad(G) \leq k \leq diam(G)$, then there exists a vertex $v \in V(G)$ such that $e(v)=k$.

Help Understanding Proof Involving Formal Power Series

A little doubt related to Continuity

Why the linear functional $\mu$ at the last line unbounded?

Alternative characterization of lim sup or lim inf. Proof explanation

Contrapositive/contradiction proofs and why do they work

Show boundedness of $\lim\limits_{n \to \infty}(1+\frac{x}{n})^n$

Computation of the fundamental groupoid of the cicrle - tom Dieck, Algebraic Topology

The product $\prod_{j\in J}X_j$ is connected iff $X_j$ is connected for each $j\in J$

To show that $\mu$ is determinate through a condition from a note

What delta do you specify in $\epsilon$-$\delta$ formula

How does this proof by induction works?

Calculating a product of 3-cycles

Representation of an involution operator with an operator matrix

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