%0 Journal Article %T First Order Languages: Further Syntax and Semantics %A Marco B. Caminati %J Formalized Mathematics %@ 1898-9934 %D 2011 %I %R 10.2478/v10037-011-0027-0 %X Third of a series of articles laying down the bases for classical first order model theory. Interpretation of a language in a universe set. Evaluation of a term in a universe. Truth evaluation of an atomic formula. Reassigning the value of a symbol in a given interpretation. Syntax and semantics of a non atomic formula are then defined concurrently (this point is explained in [16], 4.2.1). As a consequence, the evaluation of any w.f.f. string and the relation of logical implication are introduced. Depth of a formula. Definition of satisfaction and entailment (aka entailment or logical implication) relations, see [18] III.3.2 and III.4.1 respectively. %U http://versita.metapress.com/content/ku22h87280522741/?p=402fbc6153ad416ab80168a45b113833&pi=7