The Algebra of Ice

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.

The Algebra of Ice
Algebra of Ice.jpg
AuthorLloyd Rose
SeriesDoctor Who book:
Past Doctor Adventures
Release number
Seventh Doctor
Set inPeriod between
Loving the Alien and Atom Bomb Blues
PublisherBBC Books
Publication date
September 2004
Preceded bySynthespians™ 
Followed byThe Indestructible Man 


The Doctor and Ace investigate a 'crop circle' in the Kentish countryside; they are helped by a maths expert, a web-magazine publish and the Doctor's friend, the Brigadier. However, this crop circle is made of ice and is not circular, instead being filled with square-sided shapes. It draws the Doctor and Ace into a new level of reality.


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

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