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/sci/ - Science & Math

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>> No.10195411 [View]
File: 187 KB, 1200x1950, how to tie a klein bottle.png [View same] [iqdb] [saucenao] [google]
10195411

>>10195271
>>10195377
>>10195379
so how is this not a knot? if you join both ends then it is stuck to the bottle...

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