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| View Original: | Apex rhombic dodecahedron.svg (324x324) | |||
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| Keywords: Apex rhombic dodecahedron.svg apex graph used by Neil Robertson as an example of a graph that is linklessly embeddable but not YΔY-reducible It can be formed by connecting a new vertex the apex shown in red to each degree-three vertex of a rhombic dodecahedron or by merging two opposite vertices of a four-dimensional hypercube graph to form a single supervertex It is triangle-free and has minimum degree four preventing any YΔY-reduction from applying to it own David Eppstein 2010-08-01 Rhombic dodecahedral tesseract shadow; 15 vertices Files by User David Eppstein from en wikipedia Apex graph | ||||
