Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
422052 | Electronic Notes in Theoretical Computer Science | 2008 | 13 Pages |
Abstract
We give a technique that can be used to prove that a given function is a measurement. We demonstrate its applicability by using it to resolve three notoriously difficult cases: capacity in information theory, entropy in quantum mechanics and global time in general relativity. We then show that this technique provides a new and surprising characterization of measurement. Thus, in principle, it can always be used.
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