The Algebra of Ice

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Doctor Who book

The Algebra of Ice
Series	Past Doctor Adventures
Release number	68
Featuring	Seventh Doctor Ace
Writer	Lloyd Rose
Publisher	BBC Books
ISBN	ISBN 0-563-48621-X
Set between	Loving the Alien and Atom Bomb Blues
Number of pages	256
Release date	September 2004
Preceded by	'Synthespians™'
Followed by	'The Indestructible Man'

The Algebra of Ice is a BBC Books original novel written by Lloyd Rose and based on the long-running British science fiction television series Doctor Who. It features the Seventh Doctor and Ace.

Like all Doctor Who spin-off media, the way the plot fits in to the ongoing story of television series is open to interpretation. See Whoniverse#Inclusion and canonicity

The story makes reference to the Riemann hypothesis, featuring a sequence set in a 'world' modelled on the Riemann zeta function.