engelska-finska översättning av imaginary geometry

Absolute geometry, an axiomatised geometry in which the parallel postulate is absent and not replaced by an alternative, and of which Euclidean geometry and some non-Euclidean geometry|non-Euclidean geometries are subtypes
2012, Norbert A'Campo, Athanase Papadopoulos, ''Notes on non-Euclidean geometry'', Athanase Papadopoulos , ''Strasbourg Master Class on Geometry'', [https://books.google.com.au/books?id=f6yZeVMqhNEC&pg=PA4&dq=%22imaginary+geometry%22%7C%22imaginary+geometries%22&hl=en&sa=X&ved=0ahUKEwjU3a6ExcbdAhXng1QKHX0QDMUQ6AEIswEwGw#v=onepage&q=%22imaginary%20geometry%22%7C%22imaginary%20geometries%22&f=false page 4]
Lobachevsky, Pangeometry, English translation, notes and commentary by A. Papadopoulos, Heritage of European Mathematics, Vol. 4, European Mathematics Publishing House, 322 pages, 2010

Lobachevsky used the words imaginary geometry for neutral geometry, and pangeometry for hyperbolic geometry, see the comments on the use of these words and others in [59], p. 230-233

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