In [4, 5] Q. P. Hu and X. Li introduced a wide class of abstract algebras: BCH-algebras. They have shown that the class of BCI-algebras is a proper subclass of the class of BCH-algebras.
In [4, 5] Q. P.Hu and X. Li introduced a wide class of abstract algebras: BCH-algebras.They have shown that the class of BCI-algebras is a proper subclass ofthe class of BCH-algebras.