"Logical necessity" refers to something that is absolutely true or has to be true, based on logical reasoning or principles. It describes a situation or fact that cannot be avoided, denying any other possibilities. Full definition
The process would be irreversible, because logical necessity is not a characteristic a proposition can lose once it gets it. (religion-online.org)
Logical necessity governs only after the rules of the mathematical system have been posited and accepted. (religion-online.org)
Since He must of logical necessity thus love and will himself, He can not be called «free» ad intra, with the freedom of contrarieties that characterizes finite creatures. (religion-online.org)