The main concern of this book is the application of infinite moment
theory to the problem of controllability of one-di- mensional vibrating
systems (like strings and beams) and heating processes. Distributed as
well as boundary control is considered. In the case of vibrating systems
trigonometric moment pro- blems are to be investigated which is done on
the basis of an abstract moment theory in Hilbert spaces. Equivalently,
alsothe theory of linear operator equations on Hilbert spa- ces ( partly
with unbounded operators) is applied to the problem of controllability
and time-minimal controllability. In the case of heating processes
exponential moment problems are to be dealt with which is done on the
basis of an ab- stract moment theory in Banach spaces. Time-minimal
control- lability is also treated with the aid of the theory of line-
aroperator equations on Banach spaces. Some advanced knowledge in
functional analyis and on partial differential equations is preassumed
for a fluent reader of the book, but parts of it are also readable with
basic ma- thematical knowledge (for instance, the finite-dimensional
part of the introduction).