Revisions and corrections

19 October 2026

Expanded the end-of-chapter practice to ten exercises in every chapter, 100 in all, each with hints, a worked solution, and a link to the explanation it draws on. Each set moves from quick checks through worked calculations to a common misconception and extensions that probe limits of the chapter’s results. Chapter 4 received its first end-of-chapter exercises.

15 October 2026

Revised explanations across all nine chapters to shorten repetition, introduce formulas through their purpose, and state the scope of claims clearly. Updated problems and hidden solutions to test changed assumptions and common mistakes. Aligned the amplitude illustrations and reading guides with the distinction between physical postulates and their mathematical consequences. Refined reading width, postulate styling, tables, and solution controls.

Added individually expandable solutions to all 336 subsection problems. Solutions are closed initially and expand for printing.

Completed illustration coverage across all 112 subsections and appendices. Added 86 schematics, comparison tables, and probability or state-space diagrams alongside the existing figures. Each subsection pairs its illustration with three questions progressing from a concept check to application and further reasoning.

Added three levels of practice after all 107 chapter subsections and five appendices: a foundation question, a concrete application, and an optional deeper challenge. The challenges ask readers to examine assumptions, construct counterexamples, and connect formal statements to their computational meaning.

Added chapter reading guides with prerequisites, learning aims, examples, and scope; 27 exercises with hints and worked solutions; a linked glossary; prediction prompts for the four experiments; a study guide; and an offline archive. Optional polynomial material is expandable. Printing includes hidden explanations and solutions.

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This record describes editorial changes. It is not a claim that every argument has undergone independent peer review.