Originally published under the shorter title Triton, this "hard SF" novel uses mathematical concepts as part of its description of life for human colonists on the moon Triton. One of the main characters is an "applied topologist", references are made to "modular calculus" which (as in other Delany novels) is a form of mathematics for discussing analogies, and a rather messy formula (involving semiinfinite sums, integrals, exponentials and trig functions) is displayed as part of a description of a game that the colonists enjoy playing.
Contributed by
"William E. Emba"
"Partly inspired by SpencerBrown's Laws of Form, mathematics shows
up in a few places, including explicit formulas." 
