logic an uninterpreted symbolic system whose syntax is precisely defined, and on which a relation of deducibility is defined in purely syntactic terms; a logistic systemAlso called: formal theory, formal calculus Compare formal language
A massive new planet in our solar system named Tyche? Maybe. But what does “Tyche” mean?
There may be a new planet joining the solar system. A provocative hypothesis posed by a duo of planetary astronomers from the University of Louisiana-Lafayette includes the existence of the planet Tyche: a ninth planet estimated to be four times the size of Jupiter located somewhere at the outermost reaches of the solar system. It’s hard to know what is more enjoyable: stories about planets …
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012