Science Fair Project Encyclopedia
Crystal (mathematics)
Crystal in homological algebra is a diagram with points and arrows. The representation of a crystal is then an assignment to each point a space and to each arrow a morphism satisfying certain conditions.
The term crystal is also used in the theory in algebraic geometry of a certain type of algebraic differential equation (with divided power structure ) that is used to define crystalline cohomology ).
Last updated: 05-12-2005 23:56:32
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details