Simultaneous extension of generalized BT-inverses and core-EP inverses

In this paper we introduce the generalized inverse of complex square matrix with respect to other matrix having same size. Some of its representations, properties and characterizations are obtained. Also some new representation matrices of W-weighted BT-inverse and W-weighted core-EP inverse are determined as well as characterizations of generalized inverses A A^\odagger, A^{odagger,W}, A^\diamond, A^{\diamond,W}.