List questions from discrete-mathematics

Published on 10 Apr 2026 - 21:26

84

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set of $Ф$ as $\{ \}$ proof of uniqueness

Published on 11 Apr 2026 - 12:54

144

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why is $\exists z \forall x \forall y (x-y=z+2)$ false?

Published on 14 Apr 2026 - 9:52

92

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Sum of terms with recurrence relation

Published on 12 Apr 2026 - 5:58

85

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Expected values of squares

Published on 13 Apr 2026 - 9:38

105

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Recurrence question on Binary strings

Published on 12 Apr 2026 - 7:00

1.4k

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Prove that the property is preserved under isomorphism.

Published on 16 Apr 2026 - 3:45

193

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How to prove that height of a rooted tree is an invariant under isomorphism?

Published on 10 Apr 2026 - 13:42

105

Views

Ways to arrange 24 different books in 4 bookshelves

Published on 13 Apr 2026 - 8:19

145

Views

Number of expected edges in a simple undirected graph

Published on 17 Apr 2026 - 12:08

577

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A connected maximal graph $G$ with no cycles of length at least $k+1$ has $|V(G)| \leq k$ or has a cut-vertex when $k \geq 2$

Published on 25 Mar 2026 - 7:45

78

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Relating induction proof to Cantor's Theorem

Published on 10 Apr 2026 - 9:41

1.5k

Views

Time complexity of Catalan number

Published on 16 Apr 2026 - 6:11

85

Views

Is $\{ \emptyset \}$ is a subset of set $\{ \emptyset, 1, 2, 3 \}$?

Published on 13 Apr 2026 - 9:45

660

Views

Help with a proof by induction on polynomial roots

Published on 11 Apr 2026 - 1:42

List Question

Discrete math predicate problem

set of $Ф$ as $\{ \}$ proof of uniqueness

why is $\exists z \forall x \forall y (x-y=z+2)$ false?

Sum of terms with recurrence relation

Expected values of squares

Recurrence question on Binary strings

Prove that the property is preserved under isomorphism.

How to prove that height of a rooted tree is an invariant under isomorphism?

Ways to arrange 24 different books in 4 bookshelves

Number of expected edges in a simple undirected graph

A connected maximal graph $G$ with no cycles of length at least $k+1$ has $|V(G)| \leq k$ or has a cut-vertex when $k \geq 2$

Relating induction proof to Cantor's Theorem

Time complexity of Catalan number

Is $\{ \emptyset \}$ is a subset of set $\{ \emptyset, 1, 2, 3 \}$?

Help with a proof by induction on polynomial roots

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