Peter Pagin, Dag Westerståhl, Predicate Logic with Flexibly Binding Operators and Natural Language Semantics, Journal of Logic, Language, and Information, Vol. 2, No. 2 (1993), pp. 89-128 ...

The main theses are: (i) the syntax of Frege's scientific language aims at an explication of the logical form of judgements; (ii) the judgement-stroke is, therefore, a truth-operator, not a pragmatic ...