39,671 research outputs found
Modified concepts of logic, probability, and information based on generalized continuous characteristic function
All the basic laws of the traditional logic can be derived from the characteristic function f(A/a) which is 1 or 0 according as object a satisfies predicate A or not. There is good reason to believe that it is worthwhile to extend this formalism to the case where f(A/a) can take any value in the continuous domain [0, 1]. The implications of this generalization to the concepts of logic, probability and information theory are studied
Functional Approach to Quantum Decoherence and the Classical Final Limit
For a wide set of quantum systems it is demonstrated that the quantum regime
can be considered as the transient phase while the final classical statistical
regime is a permanent state. A basis where exact matrix decoherence appears for
these final states is found. The relation with the decoherence of histories
formalism is studied. A set of final intrinsically consistent histories is
found.Comment: 20 pages. Phys. Rev A in press 200
Generalized Evidence Theory
Conflict management is still an open issue in the application of Dempster
Shafer evidence theory. A lot of works have been presented to address this
issue. In this paper, a new theory, called as generalized evidence theory
(GET), is proposed. Compared with existing methods, GET assumes that the
general situation is in open world due to the uncertainty and incomplete
knowledge. The conflicting evidence is handled under the framework of GET. It
is shown that the new theory can explain and deal with the conflicting evidence
in a more reasonable way.Comment: 39 pages, 5 figure
Computability and analysis: the legacy of Alan Turing
We discuss the legacy of Alan Turing and his impact on computability and
analysis.Comment: 49 page
Use of collateral information to improve LANDSAT classification accuracies
There are no author-identified significant results in this report
Recent Conceptual Consequences of Loop Quantum Gravity. Part I: Foundational Aspects
Conceptual consequences of recent results in loop quantum gravity are
collected and discussed here in view of their implications for a modern
philosophy of science which is mainly understood as one that totalizes
scientific insight so as to eventually achieve a consistent model of what may
be called fundamental heuristics on an onto-epistemic background which is part
of recently proposed transcendental materialism. This enterprise is being
understood as a serious attempt of answering recent appeals to philosophy so as
to provide a conceptual foundation for what is going on in modern physics, and
of bridging the obvious gap between physics and philosophy. This present first
part of the paper deals with foundational aspects of this enterprise, a second
part will deal with its holistic aspects.Comment: 25 page
Unsharp Quantum Reality
The positive operator (valued) measures (POMs) allow one to generalize the notion of observable beyond the traditional one based on projection valued measures (PVMs). Here, we argue that this generalized conception of observable enables a consistent notion of unsharp reality and with it an adequate concept of joint properties. A sharp or unsharp property manifests itself as an element of sharp or unsharp reality by its tendency to become actual or to actualize a specific measurement outcome. This actualization tendency-or potentiality-of a property is quantified by the associated quantum probability. The resulting single-case interpretation of probability as a degree of reality will be explained in detail and its role in addressing the tensions between quantum and classical accounts of the physical world will be elucidated. It will be shown that potentiality can be viewed as a causal agency that evolves in a well-defined way
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