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Articles 91 - 120 of 1324

Full-Text Articles in Discrete Mathematics and Combinatorics

Component Order Edge Connectivity, Vertex Degrees, And Integer Partitions, Michael R. Yatauro Mar 2025

Component Order Edge Connectivity, Vertex Degrees, And Integer Partitions, Michael R. Yatauro

Theory & Applications of Graphs

Given a finite, simple graph G, the k-component order connectivity (resp. edge connectivity) of G is the minimum number of vertices (resp. edges) whose removal results in a subgraph in which every component has an order of at most k − 1. In general, determining the k-component order edge connectivity of a graph is NP-hard. We identify conditions on the vertex degrees of G that can be used to imply a lower bound on the k-component order edge connectivity of G. We will discuss the process for generating such conditions for a lower bound of 1 or 2, and we …


Induced-Minor-Closed Classes Of Matroids, James Dylan Douthitt Mar 2025

Induced-Minor-Closed Classes Of Matroids, James Dylan Douthitt

LSU Doctoral Dissertations

A graph is chordal if every cycle of length at least four has a chord. In 1961, Dirac characterized chordal graphs as those graphs that can be built from complete graphs by repeated clique-sums. Generalizing this, we consider the class of simple GF(q)-representable matroids that can be built from projective geometries over GF(q) by repeated generalized parallel connections across projective geometries. We show that this class of matroids is closed under induced minors and characterize the class by its forbidden induced minors, noting that the case when q=2 is distinctive. Additionally, we show that the class of GF(2)-chordal matroids coincides …


The Intricacies Of Pairwise Modular Multiplicative Inverse In Lucas Numbers, Charles Liu Mar 2025

The Intricacies Of Pairwise Modular Multiplicative Inverse In Lucas Numbers, Charles Liu

Rose-Hulman Undergraduate Mathematics Journal

Let (p,q) be a pair of relatively prime integers greater than 1. The pairwise modular multiplicative inverse (PMMI) of (p,q) is defined as the unique pair of positive integers (p′, q′) such that p p′ ≡ 1 (mod q), p′ < q, qq′ ≡ 1 (mod p), q′ < p. In this paper, we determine all pairs of Lucas numbers such that their PMMIs are pairs of Lucas numbers.


Discrete Math For Computer Science - Chapter 8: Union And Intersection And Complement: Set Identities, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 8: Union And Intersection And Complement: Set Identities, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 15: Mathematical Induction, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 15: Mathematical Induction, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 13: Sequences: Recurrence Relations, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 13: Sequences: Recurrence Relations, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 26: Introduction To Graphs: Graph Representations, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 26: Introduction To Graphs: Graph Representations, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 2: Logical Equivalence: Laws Of Propositional Logic, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 2: Logical Equivalence: Laws Of Propositional Logic, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 11: Inverse Of A Function: Composition Of Functions, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 11: Inverse Of A Function: Composition Of Functions, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 16: Recursive Definitions: Recursive Algorithms, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 16: Recursive Definitions: Recursive Algorithms, Houman Kamran Habibkhani

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Discrete Math For Computer Science, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science, Houman Kamran Habibkhani

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Discrete Mathematics and its Applications is a focused introduction to the primary themes in a discrete mathematics course, as introduced through extensive applications, expansive discussion, and detailed exercise sets. These themes include mathematical reasoning, combinatorial analysis, discrete structures, algorithmic thinking, and enhanced problem-solving skills through modeling. Its intent is to demonstrate the relevance and practicality of discrete mathematics to all students.


Discrete Math For Computer Science - Chapter 4: Logical Reasoning: Rules Of Inference, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 4: Logical Reasoning: Rules Of Inference, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 14: Summations, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 14: Summations, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 19: Number Representation, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 19: Number Representation, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 27: Paths And Cycles: Graph Connectivity, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 27: Paths And Cycles: Graph Connectivity, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 28: Introduction To Trees: Properties Of Trees, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 28: Introduction To Trees: Properties Of Trees, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 29: Tree Traversals: Spanning Trees, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 29: Tree Traversals: Spanning Trees, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 3: Predicates And Quantifiers: Quantified Statements, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 3: Predicates And Quantifiers: Quantified Statements, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 1: Proposition, Logical Operations, And Conditional Statements, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 1: Proposition, Logical Operations, And Conditional Statements, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 22: Counting By Complement: Permutations With Repetitions: Inclusion/Exclusion Principle, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 22: Counting By Complement: Permutations With Repetitions: Inclusion/Exclusion Principle, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 20: Sum And Product Rules, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 20: Sum And Product Rules, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 25: Conditional Probability And Independence, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 25: Conditional Probability And Independence, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 24: Unions And Complements Of Events, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 24: Unions And Complements Of Events, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 17: The Division Algorithm: Modular Arithmetic, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 17: The Division Algorithm: Modular Arithmetic, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 23: Probability Of An Event, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 23: Probability Of An Event, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 12: Introduction To Binary Relations, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 12: Introduction To Binary Relations, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 21: Counting Permutations And Subsets, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 21: Counting Permutations And Subsets, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 18: Prime Factorization: Gcd And Euclid’S Algorithm, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 18: Prime Factorization: Gcd And Euclid’S Algorithm, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 9: Cartesian Products, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 9: Cartesian Products, Houman Kamran Habibkhani

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Discrete Math For Computer Science - Chapter 10: Definition Of Functions: Properties Of Functions, Houman Kamran Habibkhani Mar 2025

Discrete Math For Computer Science - Chapter 10: Definition Of Functions: Properties Of Functions, Houman Kamran Habibkhani

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