List questions from discrete-mathematics

Published on 26 Mar 2026 - 10:46

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Shall we call this relation an "isomorphism"?

Published on 09 Apr 2026 - 1:47

86

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Prove that each graph with chromatic number $k$ has a definite induced sub-graph with chromatic number $k$.

Published on 03 Apr 2026 - 15:38

60

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Π Product properties

Published on 12 Apr 2026 - 1:31

78

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Solving characteristic equation for closed form solution from a given recurrence equation

Published on 10 Apr 2026 - 11:18

1.8k

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Fast algorithm to remove edge to get DAG

Published on 07 Apr 2026 - 22:02

372

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Number of 3-of-a-kind hands that are not 4-of-a-kind and not a full-house?

Published on 13 Nov 2018 - 22:42

947

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Get maximum value in directed graph

Published on 13 Apr 2026 - 10:51

99

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Show that 5|a + b when (a,b) ∈ S

Published on 14 Nov 2018 - 1:24

510

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Let P be the set of all prime numbers. Prove that $| \mathbb{P}| = |\mathbb{N}|$

Published on 14 Nov 2018 - 1:54

34

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Having trouble getting started with a proof involving functions

Published on 13 Apr 2026 - 13:44

59

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Euler Trail and Regular Graph

Published on 14 Nov 2018 - 2:16

89

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Advanced Discrete Math Generating function Problem

Published on 10 Apr 2026 - 12:50

287

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Does my solution show that the language is uncomputable by applying rice's theorem?

Published on 13 Apr 2026 - 4:51

40

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Sum of the first 50 elements of the sum $\sum n a^n$

Published on 14 Nov 2018 - 10:57

List Question

Test binary relation on the set for reflexivity, symmetry, antisymmetry and transitivity

Shall we call this relation an "isomorphism"?

Prove that each graph with chromatic number $k$ has a definite induced sub-graph with chromatic number $k$.

Π Product properties

Solving characteristic equation for closed form solution from a given recurrence equation

Fast algorithm to remove edge to get DAG

Number of 3-of-a-kind hands that are not 4-of-a-kind and not a full-house?

Get maximum value in directed graph

Show that 5|a + b when (a,b) ∈ S

Let P be the set of all prime numbers. Prove that $| \mathbb{P}| = |\mathbb{N}|$

Having trouble getting started with a proof involving functions

Euler Trail and Regular Graph

Advanced Discrete Math Generating function Problem

Does my solution show that the language is uncomputable by applying rice's theorem?

Sum of the first 50 elements of the sum $\sum n a^n$

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