On Some Types of Bitopological Groups with respect to ij-��-Open Sets

In this book we introduce eight types of bitopological groups each of which depending on the notions of ij-α-open sets and ij-α-continuous functions. This book introduces the notion of bitopological subgroups and investigating some cases where an algebric subgroup becomes a bitopological subgroup. In this book we construct a new bitopological group from old one using the notion of quotient spaces of the first type.