Corona

The first corona of a tile is the set of all tiles that have a common boundary point with that tile (including the original tile itself). The second corona is the set of tiles that share a point with something in the first corona, and so on.

Four of the Johnson solids are also known as coronas.

See also

Augmented Sphenocorona, Hebesphenomegacorona, Sphenocorona, Sphenomegacorona

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References

Eppstein, D. "Heesch's Problem." http://www.ics.uci.edu/~eppstein/junkyard/heesch/.

Referenced on Wolfram|Alpha

Cite this as:

Weisstein, Eric W. "Corona." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Corona.html

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