This comment points out a misnomer and two errors in a previous paper by the author (IEEE Trans. Fuzzy Syst., vol. 17, no. 5, pp. 1189-1207, Oct. 2009), and because one of the errors relates the term "α-plane" to the term "z-slice," it also connects these two terms more correctly.
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Jerry M. Mendel (2010) studied this question.
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