Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Bourdon, Paul S."'
Autor:
Bourdon, Paul S., Duriseti, Ram, Gromoll, H. Christian, Dalton, Dyana K., Bardosh, Kevin, Krug, Allison E.
The FDA conducted a benefit-risk assessment for Moderna's COVID vaccine mRNA-1273 prior to its full approval (announced 1/31/2022). The FDA focused its assessment on males of ages 18-64 years because the agency's risk analysis was limited to vaccine-
Externí odkaz:
http://arxiv.org/abs/2410.11811
Autor:
Bourdon, Paul S., Pantazatos, Spiro
We describe several shortcomings of a study by Patone et al, whose findings were recently published in the American Heart Association Journal Circulation, including the following: * The study's principal conclusion, as initially stated, begins "Overa
Externí odkaz:
http://arxiv.org/abs/2210.14955
A bounded linear operator $A$ on a Hilbert space $\mathcal{H}$ is posinormal if there exists a positive operator $P$ such that $AA^{*} = A^{*}PA$. We show that if $A$ is posinormal with closed range, then $A^n$ is posinormal and has closed range for
Externí odkaz:
http://arxiv.org/abs/2203.01473
Autor:
Bourdon, Paul S., Thompson, Derek
A bounded linear operator $A$ on a Hilbert space is posinormal if there exists a positive operator $P$ such that $AA^{*} = A^{*}PA$. Posinormality of $A$ is equivalent to the inclusion of the range of $A$ in the range of its adjoint $A^*$. Every hypo
Externí odkaz:
http://arxiv.org/abs/2202.01853
Autor:
Bourdon, Paul S.
Let H^2(D) denote the classical Hardy space of the open unit disk D in the complex plane. We obtain descriptions of both the spectrum and essential spectrum of composition operators on H^2(D) whose symbols belong to the class S(2) introduced by Kriet
Externí odkaz:
http://arxiv.org/abs/1401.2680
Autor:
Bourdon, Paul S.
Let X be a set of analytic functions on the open unit disk D, and let phi be an analytic function on D such that phi(D) is contained in D and f |-> f o phi takes X into itself. We present conditions on X ensuring that if f |-> f o phi is invertible o
Externí odkaz:
http://arxiv.org/abs/1211.4190
Autor:
Bourdon, Paul S., Narayan, Sivaram K.
Let g be an analytic function on the open unit disc U such that g(U) is contained in U, and let h be an analytic function on U such that the weighted composition operator W_{h,g) defined by W_{h,g}f = h f(g) is bounded on the Hardy space H^2. We char
Externí odkaz:
http://arxiv.org/abs/0910.1259
Autor:
Bourdon, Paul S.
We characterize the spectrum and essential spectrum of "essentially linear fractional" composition operators acting on the Hardy space H-two of the open unit disc U. When the symbols of these composition operators have Denjoy-Wolff point on the unit
Externí odkaz:
http://arxiv.org/abs/0908.1405
Autor:
Bourdon, Paul S., Shapiro, Joel H.
We study the intertwining relations between analytic Toeplitz operators induced on the Hardy space H^2 by analytic functions bounded on the open unit disc. Our work centers on the connection between intertwining between the Toeplitz operators the ima
Externí odkaz:
http://arxiv.org/abs/0801.1972
Autor:
Bourdon, Paul S., Shapiro, Joel H.
Publikováno v:
J. Functional Analysis 255 (2008), 1995-2012
We give an elementary proof of a formula recently obtained by Hammond, Moorhouse, and Robbins for the adjoint of a rationally induced composition operator on the Hardy space H^2. We discuss some variants and implications of this formula, and use it t
Externí odkaz:
http://arxiv.org/abs/0801.1844