DescriptionSuperfície não orientável - Bordo trifólio.jpg
English: Mathematical non-orientable surface which the boundaries are the trefoil knot in different angles, object is part of the Matemateca (IME/USP) collection.
Português: Superfície não-orientável cujo bordo é o nó trifólio, parte do acervo da Matemateca IME-USP
CC-BY-SA 4.0 (as metadata). Please attribute as Matemateca (IME/USP)/Rodrigo Tetsuo Argenton. This file was published as the result of a partnership between Matemateca (IME/USP), the RIDC NeuroMat and the Wikimedia Community User Group Brasil (Report).
Attribution: Matemateca (IME USP) / (name of the photographer)
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