Duncan Sommerville

Duncan M. Y. Sommerville
Duncan Sommerville
Born24 November 1879
Died31 January 1934
Wellington, New Zealand
NationalityScottish
CitizenshipUnited Kingdom
Alma materSt Andrews University
Known forTextbooks on geometry
Dehn-Sommerville relations
Scientific career
FieldsMathematics
InstitutionsSt Andrews University (1904–13)
Wellington University (1913–34)

Duncan MacLaren Young Sommerville FRSE FRAS (1879–1934) was a Scottish mathematician and astronomer. He compiled a bibliography on non-Euclidean geometry and also wrote a leading textbook in that field. He also wrote Introduction to the Geometry of N Dimensions, advancing the study of polytopes. He was a co-founder and the first secretary of the New Zealand Astronomical Society.

Sommerville was also an accomplished watercolourist, producing a series New Zealand landscapes.

The middle name 'MacLaren' is spelt using the old orthography M'Laren in some sources, for example the records of the Royal Society of Edinburgh.