On a family of frames for Krein spaces

J. I. Giribet, A. Maestripieri, F. Martínez Pería +1

A definition of frames for Krein spaces is proposed, which extends the notion of $J$-orthonormal basis of Krein spaces. A $J$-frame for a Krein space $(\HH, \K{\,}{\,})$ is in part…