A Note on Fuzzy Cosine Function

Meniz B.

INTERNATIONAL JOURNAL OF FUZZY SYSTEMS, cilt.24, sa.1, ss.216-217, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 1
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s40815-021-01127-5
  • Dergi Adı: INTERNATIONAL JOURNAL OF FUZZY SYSTEMS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.216-217
  • Anahtar Kelimeler: Fuzzy cosine, Type-2 fuzzy sets, Arithmetic operation
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

The arithmetic operations given between the Interval Type-2 Trapezoidal Fuzzy Numbers (IT2TrFN)s should satisfy the closeness property. Otherwise, the result encountered when the operations are used may be meaningless and not suitable for the purpose. The aim of this note is to show errors in the definitions using a non-closed division operation given by paper Pan and Wang (Int J Fuzzy Syst 144:1-15, 2020).