This book presents 29 invited articles written by participants of the International Workshop on Operator Theory and its Applications held in Chemnitz in 2017. The contributions include both expository essays and original research papers illustrating the diversity and beauty of insights gained by applying operator theory to concrete problems. The topics range from control theory, frame theory, Toeplitz and singular integral operators, Schroedinger, Dirac, and Kortweg-de Vries operators, Fourier integral operator zeta-functions, C*-algebras and Hilbert C*-modules to questions from harmonic analysis, Monte Carlo integration, Fibonacci Hamiltonians, and many more. The book offers researchers in operator theory open problems from applications that might stimulate their work and shows those from various applied fields, such as physics, engineering, or numerical mathematics how to use the potential of operator theory to tackle interesting practical problems.

One morning the people of Wemmicksville wake up to discover that they've all received gifts. Punchinello opens his gift to find a hammer; Lucia receives a paintbrush and set of paints; and Hans, the baker, gets a spoon. Nobody knows who sent the gifts, but each Wemmick receives the perfect gift: Punchinello likes to build, Lucia loves to paint, and Hans enjoys cooking.

When a family of Wemmicks needs help to reach Eli the woodcarver, Punchinello and his friends try to come to their aid. Unfortunately, nothing they do seems to work. Only when they realize that Eli gave them each a special gift are they able to use those gifts to make a difference.

This story will show kids how God has given them a special gift they can use to serve Him.

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This abridged version of a classic heartwarming tale captures the truth that God has made everyone for a special purpose. Redesigned with a new cover.