Keywords = Hyper BCK-algebra
An overview of hyper logical algebras

Volume 1, Issue 3, August 2020, Pages 31-50

R.A. Borzooei; M. Aaly


Multipolar fuzzy hyper BCK-ideals of hyper BCK-algebras

Volume 1, Issue 1, February 2020, Pages 37-47

Y.B. Jun