12crossings-rose-limacon-knot

12crossings-rose-limacon-knot クリップアート

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著者: AnonMoosソース: commons.wikimedia.org

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decorative knot self-published work images with postscript source code 12 crossing number knots and links knots and links on transparent background round graphic ornaments knots (knot theory)outline knots and links 2-fold rotational symmetry

これらのようなもの