Day 334 · Nov 29

The Birthday of C. S. Lewis (1898) – Mathematics in Narnia

C. S. Lewis wrote the Narnia series. He was a friend of J. R. R. Tolkien, but unlike Tolkien, Lewis did not embed mathematics in his fiction. However, his ‘The Lion, the Witch and the Wardrobe’ includes the concept of time differences between worlds (a scaling factor). The ‘Magician’s Nephew’ discusses the Wood between the Worlds – a mathematical graph of interconnected pools. Lewis also wrote a book on miracles, which includes a discussion of probability. Mathematics appears even in fantasy.

What is a ‘multiverse’? In mathematics, it could be a set of all possible solutions to an equation. In fiction, it’s a set of parallel worlds – an idea from modal logic.

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