Generalized Frames for B(H, K)

. Frames play significant role in various areas of science and en-gineering. Motivated by the work of Chander Shekhar, S. K. Kaushik and Abas Askarizadeh, Mohammad Ali Dehghan, we introduce the concepts of K -frames for B ( H , K ) and we establish some result. Also, we consider the relationships between K -Frames and K -Operator Frames for B ( H ).