Evolution Equations

page 1

The idea of a semi-group appeals strongly to the everyday experience of time.


Page 2

A restriction, a kind of “reversibility property”  may be assumed, that is the existence of inverses. This leads to the concept of a dynamical system which is very popular in Poland.


Page 3

Examples of semigoups in one-dimensional phase space as well as two examples of trajectories through 2D. They are all based on properties of the exponential function, the parameter t would be time.


Good to see you plying the trade again. Can't undertand a word of it myself though; it's all Greek to me. Good Luck!



Double-dutch you say? Mathematics is not for only an elite.

Thanks for the comment Jacques! Keep well! Tom