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Some remarks on Došen's logic N and its extensions

Siberian Electronic Mathematical Reports. 2022. Vol. 19. No. 2. P. 562–577.
Speranski S. O.

This paper collects some observations about Došen's logic N, where negation is treated as a modal operator, and its extensions. We shall see what happens when we add the contraposition axiom to several important extensions of N, show that certain extensions of N are canonical, and also revisit the method of filtration.

Language: English
Text on another site
Keywords: intuitionistic modal logicmodal negationHeyting–Ockham logicHypeRoutley star
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