In this paper we explain the different meanings of word “logic” and circumstances in which it makes sense to use its singular or plural form. We discuss multiplicity logical systems possibility developing a unifying theory about them, not itself system. undertake some comparisons with other sciences, such as biology, physics, mathematics, linguistics. conclude by delineating origin, scope, futu...

Mortensen introduced a connexive logic commonly known as 'M3V'. M3V is obtained by adding special conditional to LP. Among its most notable features, besides being connexive, negation-inconsistent and it validates the negation of every conditional. But has also studied applied extensively other non-connexive logics, for example, closed set logic, CSL, variant Sette's identified called 'P2' Marc...