NONLINEAR DYNAMICAL SYSTEMS AND CHAOS, H. W. Broer, S. S. van Gils, I. Hoveijn and F. Takens (eds), Birkhäuser Verlag, Basel, Switzerland, 1996, vii+459 pp. IBSN 3-7643-5346-5, 168 Swiss francs

Nonlinear Science , Chaos and Dynamical Systems 2015

This is a collection of articles, many written by people who worked with Mandelbrot, memorializing the remarkable breadth and depth of his work in science and the arts. Contributors include mathematicians, physicists, biologists, economists, and engineers, as expected; and also artists, musicians, teachers, an historian, an architect, a filmmaker, and a comic. Some articles are quite technical,...

Dr. W. H. S. Walker

? W H A T I S . . . a Projective Structure ?

The theory of locally homogeneous geometric structures on manifolds is a rich playground of examples on the border of topology and geometry. While geometry concerns quantitative relationships between collections of points, topology concerns the loose qualitative organization of points. Given a geometry (such as Euclidean geometry) and a manifold with some topology (such as the round 2-sphere), ...

Remarks on "Robustness analysis of nonlinear feedback systems: an input-output approach"

[3] S. T. Chung and J. W. Grizzle, “Internally exponentially stable nonlinear discrete-time noninteracting control via static feedback,” Int. J. Control, vol. 55, pp. 1071–1092, 1992. [4] E. Delaleau and M. Fliess, “Algorithme de structure, filtrations et découplage,” Crit. Rev. Acad. Sci. Paris, ser. I, vol. 315, pp. 101–106, 1992. [5] E. Delaleau and M. Fliess, “An algebraic interpretation of...

3 , 3 - Dimethylacylthioureas : " S " , " - S " , " U " or " W " Conformation ?

We report a study of 3,3-dimethyl substituted acylthioureas. X ray data and quantum mechanical calculations demonstrated that the "S" conformation is the most stable both for the acylthioureas and the corresponding anions. The high regioselectivity towards S-alkylation is explained on the basis of the localization of the HOMO mainly over the sulfur atom. Introduction The acylthioureid group pre...