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Sources, figures, and reuse

The explanations, numerical examples, and diagrams prepared for this book are written or generated for this project. Research references identify the scientific ideas and comparisons; they do not imply permission to reproduce a publisher’s text or figures.

Trace a figure to its source

Every numerical PNG in assets/chapter-* is exported from a tagged saved output in an executed notebook. The machine-readable figure provenance inventory records its notebook, cell tag, and SHA-256. Each chapter’s asset README explains assumptions and the export command. The seven editable SVG schematics were drawn for the book; the Persian Chapter 2 versions translate their labels. No paper screenshot or publisher figure is used in this inventory.

To reuse a numerical result in the companion course site, retain its notebook path, parameters, model limits, and the source commit. Keep the generating code and data here as the authoritative source. A link to the figure’s source is useful even when the other site displays an exported image.

Cite an idea; check permission for an image

Write explanations in your own words, cite the original scientific source, and generate your own examples and plots. A new plot of this project’s calculations differs from tracing or redrawing an existing paper figure. Label any adapted material explicitly and check its actual license or written permission before submission. An openly readable paper is not automatically licensed for figure reuse.

Copyright can protect the expression of an idea, including text and artwork, while ideas and methods themselves receive different treatment. The U.S. Copyright Office overview explains that distinction; applicable rules and exceptions depend on jurisdiction. Attribution alone is not a substitute for permission when permission is required.

A student’s contribution should include

The repository has no general reuse license selected. Contributors retain their rights; public availability does not grant a blanket right to republish everything. Dependencies and the theme keep their own licenses. Do not add third-party content whose publication you cannot authorize. Ask the instructor to resolve uncertain rights before submitting that material.

References and scope

References throughout the book support scientific context. Our restricted analytical and numerical examples do not reproduce the devices, datasets, or experimental claims of the cited papers. The provenance inventory documents the current assets’ generation paths; it is not a legal certification of every possible future contribution.

Four model drawings share the original renderer templates/model-geometry.js, exported by node scripts/export_model_geometry.cjs from the saved model parameter files. Persian labels use the same geometry implementation. These are original diagrams, not adapted publisher artwork.