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16 ottob 1976 anni - 1976 г. – доказательство теоремы о четырех цветах с помощью компьютера (К. Аппель и В. Хакен).

Aggiunto al nastro di tempo:

История геометрии 2 часть

4 gen 2019

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824

Data:

16 ottob 1976 anni

Adesso

~ 49 years ago

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