Digital library
Textbooks, references and open learning resources.

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Seven Sketches in Compositionality: An Invitation to Applied Category Theory
Brendan Fong & David I. Spivak · Massachusetts Institute of Technology
Category theory is a relatively new branch of mathematics that has transformed much of pure math research. The technical advance is that category theory provides a framework in which to organize formal systems and by which to translate between them, allowing one to transfer knowledge from one field to another. But this same organizational framework also has many compelling examples outside of pure math. In this text, we will give seven sketches on real-world applications of category theory.

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Frameworks for Academic Writing
Steve Poulter · Newman University
This text is quite different from any other textbook or writing system. First, it is designed for a wide range of writing abilities, from beginning to expert academic writers. Writers who are simply unfamiliar with academic writing patterns benefit from sentence-by-sentence templates, prompts, tutorials, and examples. We have successfully applied the system to all academic writers, from 3rd-graders to dissertation writers. Secondly, the book is designed for a wide range of teaching abilities.

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Scriptwriting for Video, Broadcast, and Digital Media
Noemi Zeigler · Laney College
In the contents: 8.02: Case Study- Twelve-Beat Structure Applied to Some Like It Hot

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About Writing Guide with Handbook, a textbook for English Composition
OpenStax · LibreTexts
In the contents: 15.08: Spotlight on ... Applied Linguistics