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Symmetry Problems

Ramm, Alexander G.
Symmetry Problems
This book gives a necessary and sufficient condition in terms of the scattering amplitude for a scatterer to be spherically symmetric. By a scatterer we mean a potential or an obstacle. It also gives necessary and sufficient conditions for a domain to be a ball if an overdetermined boundary problem for the Helmholtz equation in this domain is solvable. This includes a proof of Schiffer's conjecture, the solution to the Pompeiu problem, and oth...

CHF 46.90

If I Could Pray Again

Willcutt, Trecia
If I Could Pray Again
Do you or does someone you love need a miracle? Have you or has someone you love received a devastating doctor's report? Are you or is someone you love facing a situation that seems hopeless in the eyes of man? Then welcome to the journey! Trecia takes us on a journey of heartbreak at its deepest, fear at its strongest, pain at its worst, sadness at its most sorrowful… and prayer at its most triumphant! Come and experience the journey of...

CHF 28.50

Delusions of Clarity: A Novel of Intrigue and Perception

Bryk, Vern
Delusions of Clarity: A Novel of Intrigue and Perception
Karl Jommers is a straight-shooting therapist who must evaluate two police officers involved in a strange shooting. When they offer conflicting accounts, Jommers investigates to find the truth. While attempting to correct the distorted views of others, he is forced to question the clarity of his own perception.

CHF 27.50

MTheory Volume I

Jones, Lorraine
MTheory Volume I
Imagine your worst fear as a parent has come true: you failed your child and he is a sadistic cruel monster. Now, Makeba must find her son and stop him before he kills again. Her only son is destroying her life's work of protecting the Earth and using every trick she taught him to do it. Makeba cleans up his trail of destruction as she travels the ley lines of power on the Earth to track him down. She gets in touch with her children, old frien...

CHF 29.50

The Feather

Matthews, Wendy Mary / Matthews, Wendy Mary
The Feather
A white feather is whisked through exquisitely illustrated countryside, watched and followed by curious little creatures that witness its delightful journey. When the breeze ushers it through a small window, it brings more than its soft touch to the frail young girl inside. Through it the young girl finds renewed strength and a healing hope.

CHF 40.90

How to recruit trustees for your charity

Cadman, Lynn
How to recruit trustees for your charity
This full-colour guide takes you through the practical steps of a successful trustee recruitment campaign. From assessing skills gaps in a trustee board, to effective advertisement, to developing meaningful inductions for a new trustee, this guide demystifies the process and promotes the practice of open recruitment for charity boards.

CHF 22.90