Some implications of a new definition of the exponential function on time scales

Details Some implications of a new definition of the exponential function on time scales Some implications of a new definition of the exponential function on time scales

2010-08-29

arxiv.org/abs/1008.4911v1

Mathematics

Classical Analysis and ODEs

12 pages. Presented at 8th AIMS International Conference on Dynamical Systems, Differential Equations and Applications; Dresde

Scientific paper

We present a new approach to exponential functions on time scales and to timescale analogues of ordinary differential equations. We describe in detail the Cayley-exponential function and associated trigonometric and hyperbolic functions. We show that the Cayley-exponential is related to implicit midpoint and trapezoidal rules, similarly as delta and nabla exponential functions are related to Euler numerical schemes. Extending these results on any Pad\'e approximants, we obtain Pad\'e-exponential functions. Moreover, the exact exponential function on time scales is defined. Finally, we present applications of the Cayley-exponential function in the q-calculus and suggest a general approach to dynamic systems on Lie groups.

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