A century ago, the strange behavior of atoms and elementary particles led physicists to formulate a new theory of nature. That theory, quantum mechanics, found immediate success, proving its worth ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Abstract: In this paper, we explore the property of eventual exponential positivity (EEP) in complex matrices. We show that this property holds for the real part of the matrix exponential for a ...

William Ross does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

ABSTRACT: The concept of mass manifests in diverse forms, dimensions and configurations, and yet among all these manifestations, a unified origin is usually yearned for. This study aims to propose ...

A Python class to apply the imaginary exponential of a matrix (real tridiagonal or complex) using Fortran code; these functions apply well to solve the small matrix exponential which occurs for ...

In this work the matrix exponential function is solved analytically for the special orthogonal groups up to . The number of occurring k-th matrix powers gets limited to by exploiting the ...