Definition:Quasi-Crystal
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Definition
A quasi-crystal is a structure similar to a true crystal.
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Also see
- Results about quasi-crystals can be found here.
Historical Note
Quasi-crystals were discovered in the $1980$s.
Unlike true crystals, they can have $5$-fold symmetry.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): crystallography
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): crystallography