On leave of absence from the University of Tokyo. Sponsored by the Mathematics Research Center, U.S. Army, Madison, Wisconsin, under contract no. DA-31-124-ARO-D-462. Join the global community of ...

John Simon Guggenheim Memorial Foundation Fellow. The results of this and the following note were presented to the American Mathematical Society in October, 1953. Note: The article usage is presented ...

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The solution of the eigenvalue problem in bounded domains with planar and cylindrical stratification is a necessary preliminary task for the construction of modal solutions to canonical problems with ...

Abstract: In this work, a new method is proposed to derive the initial approximate model for a multifidelity (MF) surrogate optimization. Specifically, the proposed method is trained using a set of ...

The importance of perturbation theory in many fields is very clear through almost a century or even more. Its importance was exemplified in solving many problems in physics and other applied fields. A ...

Python library for simulating dynamics and Koopman-based learning of dynamical models. The code in this repository was prepared to implement the methodologies described in C. Folkestad, D. Pastor, I.

For a nuclear system in which the entire -eigenvalue spectrum is known, eigenfunction expansion yields the time-dependent flux response to any arbitrary source. Applications in which this response is ...