sažetak izlaganja sa skupa
Birkhoff-James and Roberts orthogonality in C*- algebras
Sažetak
Two vectors in an inner product space are orthogonal if their inner product is 0. There are many different ways how the notion of orthogonality can be generalized to the class of normed spaces. Among them, the Birkhoff--James orthogonality and the Roberts orthogonality are the most important. In this talk we shall present some basic results about these two types of orthogonality. Also, we shall present some characterizations in $C^*$- algebras which are normed spaces with some additional structures. This is a joint work with Rajna Rajić and Tomislav Berić.
Ključne riječi
normed space ; orthogonality ; C*-algebra