In addition to his legacy as a co-writer of Principia Mathematica, Whitehead's theory of "extensive abstraction" is considered foundational for the branch of ontology and computer science known as "mereotopology," a theory describing spatial relations among wholes, parts, parts of parts, and the boundaries between parts.
"The chief error in philosophy is overstatement."
Process and Reality: An Essay in Cosmology (1929)
~Alfred North Whitehead
English mathematician and philosopher Alfred North Whitehead was born #OTD in 1861. Whitehead wrote three major books on the subject: A Treatise on Universal Algebra (1898), Principia Mathematica (co-written with Bertrand Russell and published in three volumes between 1910 and 1913), and An Introduction to Mathematics (1911). via @wikipedia
Books by Alfred North Whitehead at PG:
https://www.gutenberg.org/ebooks/author/8283