About this article
Published Online: Dec 31, 2023
Page range: 299 - 308
Accepted: Dec 18, 2023
DOI: https://doi.org/10.2478/forma-2023-0024
Keywords
© 2023 Takashi Mitsuishi, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
We continue the formal development of the application of piecewise linear functions and centroids in the area of fuzzy set theory. The corresponding piecewise linear functions are symmetrical and composed by absolute function. In this paper we prove that the membership functions of isosceles triangle type and isosceles trapezoid type can be constructed by functions of this type.