“…As mentioned, modal logic is the most well-known logic of possibilities, necessities, and other concepts related to them. Fuzzy logic approaches in the theory of possibility [16,19,36,49,50,66], belief functions [9,17,38,54,55,65], and possibility measures [1,15,20,23,34,35,59] are other salient approaches to the analysis of knowledge through possible worlds. Also, Doxastic Logic has been concerned with reasoning about beliefs.…”