Symmetric summation: A class of operations on fuzzy sets. (English) Zbl 0424.04003
MSC:
03E20 | Other classical set theory (including functions, relations, and set algebra) |
03E72 | Theory of fuzzy sets, etc. |
03E20 | Other classical set theory (including functions, relations, and set algebra) |
03E72 | Theory of fuzzy sets, etc. |