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17 Sept 1871 Jahr - 1871 г. – трактат «О так называемой неевклидовой геометрии» – истолкование неевклидовых геометрий как проективных с метрикой Кэли (Ф. Клейн).
Zugefügt zum Band der Zeit:
История геометрии 2 часть
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Ксения
4 Jan 2019
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0
828
Datum:
17 Sept 1871 Jahr
Jetzt
~ 154 years ago
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