Fuzzy set theory when restricted to sets of real numbers can be approached via intervals and interval analysis. The intimate relationship between interval analysis and fuzzy set theory is especially apparent in fuzzy arithmetic, fuzzy optimization and some areas of fuzzy mathematical analysis.
Intervals are one type of fuzzy set possessing a rectangular membership function.
This being the case, the issues and mathematical analysis associated with fuzzy set theory and interval analysis are mutually relevant. We invite papers on advances that clearly demonstrate the interrelationships between fuzzy set theory and interval analysis. We list some examples of the types of papers we seek. This list is indicative and not exhaustive. One of the uses of interval analysis is in the validation of solutions under computational and data errors.