BL R-series engine BL R-series engine The R series is a line of petrol engines introduced by British Leyland in 1983 for the then-new Austin Maestro. It was only produced in one capacity—1.6 litres. The engine was essentially a lightly modified version of the E-series unit found in the Maxi and Allegro. The main differences over the older engine are to the sump and gearbox mounting flange, which were adapted to accept a traditional "end-on" transmission unit which had been bought from Volkswagen in place of the traditional BMC transmission-in-sump arrangement. The R series was mainly a stop gap, and had a very
BL (logic) for BL has been introduced by Petr Hájek (1998). Its single derivation rule is modus ponens: The following are its axiom schemata: The axioms (BL2) and (BL3) of the original axiomatic system were shown to be redundant (Chvalovský, 2012) and (Cintula, 2005). All the other axioms were shown to be independent (Chvalovský, 2012). Like in other propositional t-norm fuzzy logics, algebraic semantics is predominantly used for BL, with three main classes of algebras with respect to which the logic is complete: BL (logic) Basic fuzzy Logic (or shortly BL), the logic of continuous t-norms, is one of t-norm fuzzy logics.