"iff" - related articles and key terms

Related terms: b   neg   lor   if   unary   axiom   we say   logika   forall   logic   radar   mathcal   upgrades   avionics   pilot   sentences   rightarrow   extensions   biconditional   propositional   algorithm   boolean algebra   capabilities   if and only if   entered service   mathematical logic   mathematical   identification   propositional calculus   royal air force

Wikipedia sources: If and only if   Floorball   Petri net   Propositional calculus   Type 99   Modal logic   File format   CF-18 Hornet   Knapsack problem   Model theory   Westland Lynx   Rapier missile   Big O notation   Dassault Mirage 2000   Lexicographical order   Transponder (aviation)

Context for words: iff