Lyapunov methods have been and are still one of the main tools to analyze the stability properties of dynamical systems. In this monograph, Lyapunov results characterizing the stability and stability of the origin of differential inclusions are reviewed. To characterize instability and destabilizability, Lyapunov-like functions, called Chetaev and control Chetaev functions in the monograph, are introduced. Based on their definition and by mirroring existing results on stability, analogue r...

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Charlie the origami bee may be new to the bug world, but he knows all about plants. When the other bugs lose their ball, his plant smarts come in handy. Buzz around with Charlie, and learn all about plant parts!

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The new post-apocalyptic collection by master anthologist John Joseph Adams, featuring never-before-published stories and curated reprints by some of the genre's most popular and critically-acclaimed authors. In WASTELANDS: THE NEW APOCALYPSE, veteran anthology editor John Joseph Adams is once again our guide through the wastelands using his genre and editorial expertise to curate his finest collection of post-apocalyptic short fiction yet. Whether the end comes via nuclear war, pandemic, ...