FACTORISATION OF ORTHOGONAL PROJECTORS.

Autor: SUSHCHYK, N. S., DEGNERYS, V. M.
Předmět:
Zdroj: Matematychni Studii; 2021, Vol. 55 Issue 2, p181-187, 7p
Abstrakt: We study the problem of a special factorisation of an orthogonal projector P acting in the Hilbert space L2(R) with dimker P < ∞. In particular, we prove that the orthogonal projector P admits a special factorisation in the form P = V V, where V is an isometric upper-triangular operator in the Banach algebra of all linear continuous operators in L2(R). Moreover, we give an explicit formula for the operator V. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index