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Tetrahedral Dual

One of the original Klein-invariant ornaments (the baseline, R0).

Recipe R2 on the tetrahedron (how the recipes work): zeros at the vertex directions, each of order equal to the vertex's valence; poles at the polar face directions, each of order equal to the face's number of sides.

Classical form: f(z) = Φ(z) / Ψ(z).

Note

Not chiral (six mirror planes); the phase rotates by cube roots of unity under three-fold rotations.

Zeros and poles

The tetrahedron with the zeros (blue) and poles (red) of its function

zeros (pits) poles (spikes). Markers grow with order. Drag to rotate, scroll or pinch to zoom, hover or tap a marker for details.

Views

Phase portrait of f in the plane

Phase portrait of f in the plane

Phase on the Riemann sphere

Phase on the Riemann sphere

The printed shape, colored by phase

The printed shape, colored by phase

The printed shape

The printed shape

The function and the print

zeros 4 points: 4 of order 1
poles 4 points: 4 of order 1
degree 4
printed yes
cut two identical halves: print the half file twice
print files on Printables: whole, cut halves, and a hanging-ornament version; 80 and 130 mm

Where it comes from

Status: listed. Generated from the catalog entry tetrahedral-dual.