Who is the Russian scholar, whose interpretation of metalinguistics, Jacob L Mey describes in his book, Trends in Lingusistics?
Mikhail Mikhailovich Bakhtin
Title: Mikhail Bakhtin
Passage: Mikhail Mikhailovich Bakhtin ( ; Russian: Михаи́л Миха́йлович Бахти́н , ] ; 17 November [O.S. 5 November] 1895 – 7 March 1975) was a Russian philosopher, literary critic, semiotician and scholar who worked on literary theory, ethics, and the philosophy of language.  His writings, on a variety of subjects, inspired scholars working in a number of different traditions (Marxism, semiotics, structuralism, religious criticism) and in disciplines as diverse as literary criticism, history, philosophy, sociology, anthropology and psychology.  Although Bakhtin was active in the debates on aesthetics and literature that took place in the Soviet Union in the 1920s, his distinctive position did not become well known until he was rediscovered by Russian scholars in the 1960s.
Title: Boolean algebras canonically defined
Passage: Boolean algebra is a mathematically rich branch of abstract algebra.  Just as group theory deals with groups, and linear algebra with vector spaces, Boolean algebras are models of the equational theory of the two values 0 and 1 (whose interpretation need not be numerical).  Common to Boolean algebras, groups, and vector spaces is the notion of an algebraic structure, a set closed under zero or more operations satisfying certain equations.
Title: Metalinguistics
Passage: Metalinguistics is the branch of linguistics that studies language and its relationship to other cultural behaviors.  It is the study of dialogue relationships between units of speech communication as manifestations and enactments of co-existence.  Jacob L. Mey in his book, "Trends in Linguistics", describes Mikhail Bakhtin's interpretation of metalinguistics as "encompassing the life history of a speech community, with an orientation toward a study of large events in the speech life of people and embody changes in various cultures and ages."
Mikhail Bakhtin Metalinguistics