Leibnitz's law

Leibnitz's law

n
1. (Logic) the principle that two expressions satisfy exactly the same predicates if and only if they both refer to the same subject
2. (Logic) the weaker principle that if a=b whatever is true of a is true of b
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Mentioned in ?