The Wave Equation with Computable Initial Data Whose Unique Solution Is Nowhere Computable
โ Scribed by Marian B. Pour-El; Ning Zhong
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 456 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0044-3050
No coin nor oath required. For personal study only.
โฆ Synopsis
Abstract
We give a rough statement of the main result. Let D be a compact subset of โ^3^ร โ. The propagation u(x, y, z, t) of a wave can be noncomputable in any neighborhood of any point of D even though the initial conditions which determine the wave propagation uniquely are computable. A precise statement of the result appears below.
๐ SIMILAR VOLUMES
## Abstract Suppose __u__ is the solution of the initial value problem Suppose __n__ โฅ 1 is odd, __f__ and __g__ are supported in a ball __B__ with boundary __S__, and one of __f__ or __g__ is zero. We derive identities relating the norm of __f__ or __g__ to the norm of the trace of __u__ on __S_