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An Agmon-Allegretto-Piepenbrink principle for Schrödinger operators. [PDF]

open access: yesRev R Acad Cienc Exactas Fis Nat A Mat, 2022
Buccheri S, Orsina L, Ponce AC.
europepmc   +1 more source

The Double-Layer Potential for Spectral Constants Revisited. [PDF]

open access: yesIntegr Equ Oper Theory
Schwenninger FL, de Vries J.
europepmc   +1 more source

Amarts: A class of asymptotic martingales a. Discrete parameter

open access: yes
A sequence (Xn) of random variables adapted to an ascending (asc.) sequence n of [sigma]-algebras is an amart iff EX[tau] converges as [tau] runs over the set T of bounded stopping times. An analogous definition is given for a descending (desc.) sequence
Sucheston, Louis, Edgar, Gerald A.
core  

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