Putting a variable symbol in the payment order was modified by Decree CNB 62 / 2004 Coll . ( Repealed Decree of the Czech National Bank No . 169 / 2011 Coll . without compensation, despite the repealed ordinance is still in practice ).
12.
Another aspect of the logic as Boolos defines it, crucial to this bypassing of Russell's paradox, is the fact that sentences of the form F ( \ bar { x } ) are not well-formed : predicate names can only combine with singular variable symbols, not plural variable symbols.
13.
Another aspect of the logic as Boolos defines it, crucial to this bypassing of Russell's paradox, is the fact that sentences of the form F ( \ bar { x } ) are not well-formed : predicate names can only combine with singular variable symbols, not plural variable symbols.
14.
A model is defined as a tuple ( D, V, s, R ) where D is the domain, V is a collection of valuations V _ F for each predicate name F in the usual sense, and s is a Tarskian sequence ( assignment of values to variables ) in the usual sense ( i . e . a map from singular variable symbols to elements of D ).
15.
Where for singular variable symbols, s \ approx _ x s'means that for all singular variable symbols y other than x, it holds that s _ y = s'_ y, and for plural variable symbols, R \ approx _ \ bar { x } R'means that for all plural variable symbols \ bar { y } other than \ bar { x }, and for all objects of the domain d, it holds that dR \ bar { y } = dR'\ bar { y }.
16.
Where for singular variable symbols, s \ approx _ x s'means that for all singular variable symbols y other than x, it holds that s _ y = s'_ y, and for plural variable symbols, R \ approx _ \ bar { x } R'means that for all plural variable symbols \ bar { y } other than \ bar { x }, and for all objects of the domain d, it holds that dR \ bar { y } = dR'\ bar { y }.
17.
Where for singular variable symbols, s \ approx _ x s'means that for all singular variable symbols y other than x, it holds that s _ y = s'_ y, and for plural variable symbols, R \ approx _ \ bar { x } R'means that for all plural variable symbols \ bar { y } other than \ bar { x }, and for all objects of the domain d, it holds that dR \ bar { y } = dR'\ bar { y }.
18.
Where for singular variable symbols, s \ approx _ x s'means that for all singular variable symbols y other than x, it holds that s _ y = s'_ y, and for plural variable symbols, R \ approx _ \ bar { x } R'means that for all plural variable symbols \ bar { y } other than \ bar { x }, and for all objects of the domain d, it holds that dR \ bar { y } = dR'\ bar { y }.
