What do a.m. and p.m. stand for?

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.”.
Origin of open sentence
1935-40 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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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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