yigal_s: (Default)
yigal_s ([personal profile] yigal_s) wrote 2023-02-10 08:21 pm (UTC)

вернее, в одном измерении бесконечен (в обоих направлениях), а в других - зациклен.
Можно назвать это бесконечной трубой, но вроде такие вещи принято называть цилиндрами
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