ISBN-13: 9783540437260 / Angielski / Miękka / 2002 / 202 str.
ISBN-13: 9783540437260 / Angielski / Miękka / 2002 / 202 str.
Many problems of stability in the theory of dynamical systems face the difficulty of small divisors. This text illustrates developments of this theory both in finite and infinite dimension. A list of open problems (including some problems contributed by John Mather and Michel Herman) is included.