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Jay Cummings is a professor of mathematics at California State University, Sacramento, who earned his PhD at UC San Diego under the legendary combinatorialist Ron Graham. He is the author of the self-published Long-Form Math Textbook Series — deliberately affordable, conversational textbooks on proofs, real analysis, and the history of mathematics that favor motivation and explanation over the terse definition-theorem-proof style, and have become favorites of students and self-learners.
longformmath.com/ →
2025
Cummings traces how mathematics grew across cultures and centuries — from number systems and ancient methods to proof, geometry, number theory, algebra, calculus, and topology — pairing historical problems and original arguments with his trademark conversational, long-form style.
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2021
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2019
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