Boundaries of a Complex World

Introduction.- Boundaries in Visual Perception and the Arts.- Boundaries in Social Systems.- Continuous Mathematics.- Discrete Mathematics.- The Boundary in the Philosophy of Science.- Networks and their Boundaries.- Big Data Systems.- Liquid Boundaries.- Conclusions.

Dr. A. Ludu graduated in 1980 the MS Program in Theoretical Physics and Mathematics from University of Bucharest and he had received his Ph. D. in Physics in 1989 from the "H. Hulubei National Institute of Physics" in Bucharest-Magurele, Romania with a thesis on group transformations approach on hot and dense plasma. He worked as a senior researcher in this Institute until 1985, and he joined the Dept. Theoretical Physics at University of Bucharest University as Associate Professor until 1996. Between 1986 and 2001 he was postdoctoral researcher at Louisiana State University in Baton Rouge, and he joined Northwestern State University as Professor of Physics until 2011. At present he is Professor of Mathematics and Director of the Wave Lab in the Dept. of Mathematics at Embry-Riddle Aeronautical University in Daytona Beach. He published more than 80 peer reviewed paper in scientific journals and 4 books on the topics of solitons and nonlinear systems, applied differential geometry in physics, quantum groups, fluid dynamics, nuclear theory, biophysics, ultra-high energy density systems and wavelets. He was invited to work and give talks at prestigious centers of research including Los Alamos Natl. Lab, ICTP Trieste, Antwerp University, Universite Libre de Bruxelles,  US Navy Research Labs, Plymouth University, Trinity College, Niels Bohr Institute, Abo Akademi, Dalian University of Technology, etc. He was guest professor for more than ten years at J. Liebig University in Giessen and Goethe University in Frankfurt/Main, Germany. He was awarded the Mildred Hart Bailey Research Award and he is honorary member of several professional associations and science groups. In 1992 he predicted the existence of shape solitons orbiting on the surface of spheres (rotons). These predictions were continuously confirmed experimentally in systems like heavy nuclei collisions, flat electron drops, liquid drops and Leidenfrost drops and tori between 2007 and present.  Dr.