Modus vivendi Modus vivendi Modus vivendi is a Latin phrase that means "mode of living" or “way of life”. It often is used to mean an arrangement or agreement that allows conflicting parties to coexist in peace. In science it is used to describe lifestyles. "Modus" means "mode", "way", "method", or "manner". "Vivendi" means "of living". The phrase is often used to describe informal and temporary arrangements in political affairs. For example, if two sides reach a "modus vivendi" regarding disputed territories, despite political, historical or cultural incompatibilities, an accommodation of their respective differences is established for the sake of contingency. In
Modus tollens saying that formula_2 is TRUE, and the case where formula_49 is an absolute FALSE opinion is equivalent to source formula_52 saying that formula_2 is FALSE. The abduction operator formula_66 of subjective logic produces an absolute FALSE abduced opinion formula_67 when the conditional opinion formula_57 is absolute TRUE and the consequent opinion formula_49 is absolute FALSE. Hence, subjective logic abduction represents a generalization of both "modus tollens" and of the Law of total probability combined with Bayes' theorem . Modus tollens In propositional logic, modus tollens (; MT; also modus tollendo tollens (Latin for "mode that denies by denying") or denying