Yours, Etc.: Origins and Uses of 8 Sign-Offs

open sentence

Mathematics. an equation or inequality containing one or more variables in which its truth or falsehood depends upon the values assumed by the variables in a particular instance, as the equation x + 3 = 8.
Logic. a propositional function that contains a free variable, as “ x is a man.”.
1935-40 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for open sentence
  • Create and write a word problem to match a given open sentence with a single variable and one operation.
  • The student will create a problem situation based on a given open sentence using a single variable.
British Dictionary definitions for open sentence

open sentence

(logic) an expression containing a free variable that can be replaced by a name to yield a sentence, as x is wise Also called propositional function, sentential function
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
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