Charles Lutwidge Dodgson taught mathematics at Christ Church, Oxford, for twenty-six years. He wrote textbooks defending Euclid and treatises on symbolic logic. The children's book he is now famous for is, when you read it as an adult, an extended joke about base-numbering systems, non-Euclidean geometry, and abstract identity, smuggled inside a story about a small girl falling down a hole. [storica.club]
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