Properties of the logical consequence operation and its relationship with the independence of propositional logic
Ukr. Mat. Zh. - 2018. - 70, № 6. - pp. 857-864
We investigate the properties of the logical consequence operation and the characteristic features of independent sets of formulas. Further, we apply these results to propositional logic. Finally, we show under what conditions the results of addition of a formula to independent sets of formulas and the union of two independent sets of formulas are also independent, by using the operation of logical consequence, i.e., we establish a relationship between the logical consequence and the preservation of independence in propositional logic.