- double torus
- Математика: двойной тор, сфера с двумя ручками
Универсальный англо-русский словарь. Академик.ру. 2011.
double torus
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Double torus — In mathematics, a double torus is a topological object formed by the connected sum of two torii. That is to say, from each of two torii the interior of a disk is removed, and the boundaries of the two disks are identified (glued together),… … Wikipedia
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