3 1 Further Notes and Views: Difference between revisions
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===Non-prime (compound) versions=== |
===Non-prime (compound) versions=== |
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Image:Granny-knot-6-crossings.png|Two trefoils (single-closed-loop version of the "granny knot" of practical knot-tying). |
Image:Granny-knot-6-crossings.png|Two trefoils (single-closed-loop version of the "granny knot" of practical knot-tying). |
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Image:Blue Square Knot.png|3D square knot |
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Image:3trefoil-9crossings.gif|Three trefoils (symmetrical). |
Image:3trefoil-9crossings.gif|Three trefoils (symmetrical). |
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Image:Celtic-knot-insquare-green-transparentbg.png|Four trefoils (Celtic or pseudo-Celtic decorative knot which fits in square) |
Image:Celtic-knot-insquare-green-transparentbg.png|Four trefoils (Celtic or pseudo-Celtic decorative knot which fits in square) |
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Revision as of 02:28, 23 March 2010
The trefoil is perhaps the easiest knot to find in "nature", and is topologically equivalent to the interlaced form of the common Christian and pagan "triquetra" symbol [12]:
 Logo of Caixa Geral de Depositos, Lisboa [1] |
 A knot consists of two harts in Kolam [2] |
Further images...[hide]
 A Knotted Box [3] |
 A trefoil near the Hollander York Gallery [4] |
 A Knotted Pencil [5] |
 Thurston's Trefoil - Figure Eight Trick [6] |
 Banco Do Brasil [7] |
 A hagfish tying itself in a knot to escape capture. [8] |
 A Kenyan Stone [9] | |
 Mike Hutchings' Rope Trick [10] | |||
 The NeverEnding Story logo is a connected sum of two trefoils. [11] |
Non-prime (compound) versions
Two trefoils (single-closed-loop version of the "granny knot" of practical knot-tying).
Two trefoils (single-closed-loop version of the "square knot" of practical knot-tying)
3D square knot
Three trefoils (symmetrical).
Four trefoils (Celtic or pseudo-Celtic decorative knot which fits in square)
Three trefoils along a closed loop which itself is knotted as a trefoil.
For a configuration of two trefoils along a closed loop which is prime, see 10_120.
