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Dual positive implicative hyper $K$-ideals of type 2
Zahedi, M.M., Torkzadeh, L., (2003)
Hypergroup objects
Hosseini, S.N., Khorashadi-Zadeh, M.R., (2001)
Uniform topology on hyper $K$-algebras
Borumand Saeid, A., (2003)