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14 sett 1927 anni - Создание теории узлов (К. Гаусс; позднее занимались И. Листинг, П. Тэйт и Дж. Александер).

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История геометрии 2 часть

4 gen 2019

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14 sett 1927 anni

Adesso

~ 98 years ago

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