equality - one of the primitive or undefined notions in the GЖdel-Bernays formulation of set theory, giving the relationship between two quantities that have the same value or that can be considered to be the same in the given context. Equality is an equivalence relation; i.e., it is reflexive, symmetric, and transitive. ;
дс тдрлими цюлютдажкию дроемжки аиакиохдйис лидр
http://www.harcourt.com/dictionary/def/3/6/1/3/3613600.html;
