Science absolute of space, independent of the truth or falsity of Euclid's axiom XI (which can never be decided a priori) / by John Bolyai ; translated [from the appendix contributed by J. Bolyai to F. Bolyai's "Tentamen juventutem studiosam in elementa m

Science absolute of space, independent of the truth or falsity of Euclid's axiom XI (which can never be decided a priori) / by John Bolyai ; translated [from the appendix contributed by J. Bolyai to F. Bolyai's "Tentamen juventutem studiosam in elementa matheseos ... introducendi"] from the Latin by George Bruce Halsted.