Thursday, October 15, 2026

The weave pattern at the ends of a tetrahelix

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At the terminus of a tetrahelix (a Boerdijk-Coxeter helix of finite length) is a tetrahedron with three vertices at its base which can be i...
Tuesday, October 13, 2026

29 Tetrahedron Boerdijk-Coxeter Struts

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Tetrahelical struts composed of 29 tetrahedra (BC29) are three times more acurate in terms of angular divergence between the two terminal ed...
Thursday, October 8, 2026

Deltahedral Struts and Nodes

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The wrap-forming technique for unicursal deltahedra motivates interest in strut-and-node construction sets that are composed of unicursa...
Thursday, August 27, 2026

The period 4 tetrahelices

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Since tetrahedral chains always have a choice of 3 triangles where the next tetrahedron will be attached, they can be described by words on ...
Tuesday, August 25, 2026

Periodic Tetrahedral Chains

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A tetrahedral chain is a particular sort of deltahedron that can be formed step-by-step, incrementally adding a single regular tetrahedron...
Thursday, July 30, 2026

Deltahedron DNA at Bridges Galway 2026 Family Day

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On Saturday August 8, 2026, I will be leading an activity at the University of Galway, for the Bridges Math Art Conference Family Day . We w...
Thursday, April 23, 2026

Joining up link components to form knotted deltahedra

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The tetrahedral graph is a Tait graph of a 3-component link. Many interesting deltahedra, foremost among them the triangle-faced Platonic ...