4 ideas
18192 | Do the Replacement Axioms exceed the iterative conception of sets? [Boolos, by Maddy] |
18465 | An 'equivalence' relation is one which is reflexive, symmetric and transitive [Kunen] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |