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An Introduction to Mathematical Proofs - Nicholas A. Loehr

An Introduction to Mathematical Proofs

Buch | Softcover
412 Seiten
2023
CRC Press (Verlag)
978-1-032-47522-6 (ISBN)
CHF 76,75 inkl. MwSt
This book contains an introduction to mathematical proofs, including fundamental material on logic, proof methods, set theory, number theory, relations, functions, cardinality, and the real number system. The book is divided into approximately fifty brief lectures. Each lecture corresponds rather closely to a single class meeting.
An Introduction to Mathematical Proofs presents fundamental material on logic, proof methods, set theory, number theory, relations, functions, cardinality, and the real number system. The text uses a methodical, detailed, and highly structured approach to proof techniques and related topics. No prerequisites are needed beyond high-school algebra.



New material is presented in small chunks that are easy for beginners to digest. The author offers a friendly style without sacrificing mathematical rigor. Ideas are developed through motivating examples, precise definitions, carefully stated theorems, clear proofs, and a continual review of preceding topics.

Features








Study aids including section summaries and over 1100 exercises



Careful coverage of individual proof-writing skills



Proof annotations and structural outlines clarify tricky steps in proofs



Thorough treatment of multiple quantifiers and their role in proofs



Unified explanation of recursive definitions and induction proofs, with applications to greatest common divisors and prime factorizations



About the Author:



Nicholas A. Loehr is an associate professor of mathematics at Virginia Technical University. He has taught at College of William and Mary, United States Naval Academy, and University of Pennsylvania. He has won many teaching awards at three different schools. He has published over 50 journal articles. He also authored three other books for CRC Press, including Combinatorics, Second Edition, and Advanced Linear Algebra.

Nicholas A. Loehr is an associate professor of mathematics at Virginia Technical University. He has taught at College of William and Mary, United States Naval Academy, and University of Pennsylvania. He has won many teaching awards at three different schools. He has published over 50 journal articles. He also authored three other books for CRC Press, including Combinatorics, Second Edition, and Advanced Linear Algebra.

Logic



Propositions; Logical Connectives; Truth Tables



Logical Equivalence; IF-Statements



IF, IFF, Tautologies, and Contradictions



Tautologies; Quantifiers; Universes



Properties of Quantifiers: Useful Denials



Denial Practice; Uniqueness



Proofs



Definitions, Axioms, Theorems, and Proofs



Proving Existence Statements and IF Statements



Contrapositive Proofs; IFF Proofs



Proofs by Contradiction; OR Proofs



Proof by Cases; Disproofs



Proving Universal Statements; Multiple Quantifiers



More Quantifier Properties and Proofs (Optional)



Sets



Set Operations; Subset Proofs



More Subset Proofs; Set Equality Proofs



More Set Quality Proofs; Circle Proofs; Chain Proofs



Small Sets; Power Sets; Contrasting ∈ and ⊆



Ordered Pairs; Product Sets



General Unions and Intersections



Axiomatic Set Theory (Optional)



Integers



Recursive Definitions; Proofs by Induction



Induction Starting Anywhere: Backwards Induction



Strong Induction



Prime Numbers; Division with Remainder



Greatest Common Divisors; Euclid’s GCD Algorithm



More on GCDs; Uniqueness of Prime Factorizations



Consequences of Prime Factorization (Optional)



Relations and Functions



Relations; Images of Sets under Relations



Inverses, Identity, and Composition of Relations



Properties of Relations



Definition of Functions



Examples of Functions; Proving Equality of Functions



Composition, Restriction, and Gluing



Direct Images and Preimages



Injective, Surjective, and Bijective Functions



Inverse Functions



Equivalence Relations and Partial Orders



Reflexive, Symmetric, and Transitive Relations



Equivalence Relations



Equivalence Classes



Set Partitions



Partially Ordered Sets



Equivalence Relations and Algebraic Structures (Optional)



Cardinality



Finite Sets



Countably Infinite Sets



Countable Sets



Uncountable Sets



Real Numbers (Optional)



Axioms for R; Properties of Addition



Algebraic Properties of Real Numbers



Natural Numbers, Integers, and Rational Numbers



Ordering, Absolute Value, and Distance



Greatest Elements, Least Upper Bounds, and Completeness



Suggestions for Further Reading

Erscheinungsdatum
Reihe/Serie Textbooks in Mathematics
Zusatzinfo 67 Illustrations, black and white
Verlagsort London
Sprache englisch
Maße 178 x 254 mm
Gewicht 725 g
Themenwelt Mathematik / Informatik Mathematik Allgemeines / Lexika
ISBN-10 1-032-47522-6 / 1032475226
ISBN-13 978-1-032-47522-6 / 9781032475226
Zustand Neuware
Informationen gemäß Produktsicherheitsverordnung (GPSR)
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