TY - JOUR AU - Dai, Songsong PY - 2022 TI - Quasi-MV algebras for complex fuzzy logic JO - AIMS Mathematics SP - 1416 EP - 1428 VL - 7 IS - 1 AB - Complex fuzzy logic (CFL) is an emerging topic of research in fuzzy logic. Due to the circle structured codomain of the complex membership function, algebraic structure (including MV-algebra) in traditional fuzzy logic cannot be easily transplanted to CFL. Quasi-MV algebras are almost identical to MV algebras, except α ⊕ 0 = α does not always hold. In this paper, our goal is to derive some algebraic structures for CFL. We first construct a quasi-MV algebra in complex fuzzy logic by introducing negation and truncated sum in the unit disc of the complex plane S . Next we construct a ¬ quasi-MV algebra over S by adding an operation of square root of the negation. Moreover, implication connective and some derived connectives on S are introduced. Furthermore, we construct a quasi-Wajsberg algebra over S in which implication is a primitive connective. These algebraic structures are suitable for CFL. UR - https://doi.org/10.3934/math.2022083 DO - 10.3934/math.2022083