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Abstract: This article studies the stability problem of discrete-time switched positive linear systems (SPLSs) with marginally stable subsystems. Based on the weak common linear copositive Lyapunov ...

This study examined the relationship between the Monetary Policy Rate (MPR) and inflation across five continents from 2014 to 2023 using both Frequentist and Bayesian Linear Mixed Models (LMM). It ...

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Abstract: Local positive reachability of positive nonlinear continuous-time systems is investigated. It is shown that the system is locally positively reachable from the origin if and only if in some ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Suzanne is a content marketer, writer, and fact-checker. She holds a Bachelor ...

We introduce the notion of (completely) multi-positive linear maps between C*-algebras, and show that a completely multi-positive linear map induces a representation of a C*-algebra on Hilbert ...

PNAS is the world's most-cited multidisciplinary scientific serial. It publishes high-impact research reports, commentaries, perspectives, reviews, colloquium papers, and actions of the Academy. In ...

Positive life change is just plain hard. If anyone tells you otherwise, they are probably trying to sell you something. But positive life change is possible and decidedly worth the effort. What could ...

In a recent study, scientists from the Institute of Physics of the Chinese Academy of Sciences, in collaboration with scientists from Dresden, Halle, and others have established a physical model of ...