|Equivalence class: is obtained from an equivalence relation (reflexive, symmetric, transitive). E.g. from dividing by 3 with remaining 2 2, 5, 8, 11 ... form an equivalence class. E.g. switch positions, e.g. weekdays form equivalence classes modulo 7.|
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|Equivalence Class||Wa I 169
Equivalence classes / today: to determine the nature of mathematical objects with equivalence classes, called "definition by abstraction" - then you replace "equal" by "equivalent"
Einführung in das mathematische Denken Darmstadt 1996
Logik, Sprache, Philosophie Stuttgart 1976