Subnormal Weighted Shifts on Directed Trees and Composition Operators in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mi>L</mml:mi></mml:mrow></mml:math><b><sup>2</sup></b>-Spaces with Nondensely Defined Powers
Abstract and applied analysis