@article {10.3844/jmssp.2022.78.86, article_type = {journal}, title = {Measurable Functional Calculi and Spectral Theory}, author = {Yaremenko, Mykola}, volume = {18}, year = {2022}, month = {Jul}, pages = {78-86}, doi = {10.3844/jmssp.2022.78.86}, url = {https://thescipub.com/abstract/jmssp.2022.78.86}, abstract = {In this article, the spectral theory is considered, we study the spectral families and their correspondence to the operators on the reflexive Banach spaces; assume A is a well-bounded operator on reflexive Lebesgue spaces then the operator A is a scalar type spectral operator. The main goals are to obtain the characterization of the well-bounded operators in the terms of the associated spectral family in the topology of dual pairing and to construct the continuous functional calculus for well-bounded operators on the Lebesgue space.}, journal = {Journal of Mathematics and Statistics}, publisher = {Science Publications} }