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“Cardinality” as a book category gathers works—fiction and nonfiction—that center on number, scale, and multiplicity: how many there are, how big things get, and what changes as quantities grow. It includes mathematical explorations of set theory, counting, infinity, and combinatorics; data-rich essays on demographics, economics, ecology, and astronomy; and narratives shaped by enumeration, lists, constraints, permutations, or branching paths. You’ll find multiverse sci‑fi, polyphonic novels with vast casts, Oulipian experiments, catalogs and archives, and even inventive counting books for children. The unifying theme is an inquiry into magnitude and its meanings—how we move from the one to the many, from scarcity to abundance, and how quantification both reveals and resists the human texture behind the numbers.

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