Some properties of dual counterparts of consequence operations. (Polish)
Acta Univ. Wratislav. 605, Pr. Filoz. 34, Logika 10, 71-116 (1983).
1
Some properties of the operation d. (English)
Rep. Math. Logic 3, 53-56 (1974).
2
Dual counterparts of Lukasiewicz’s sentential calculi. (English)
Stud. Log. 33, 153-162 (1974).
3
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