Felix Klein
18491925
German mathematician, educator, and historian known for his Erlangen Program, which unified geometries by their symmetry groups, and for his work in complex analysis and non-Euclidean geometry
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Сүзгіден өткізілген «Өмірлер» бөліміндегі барлығын қарау18421925
French astronomer, prolific author of popular science and early science fiction, and founder of L'Astronomie magazine
