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- B._Roy_Frieden abstract "B. Roy Frieden is an American mathematical physicist.Frieden obtained a Ph.D. in Optics from The Institute of Optics at the University of Rochester. His doctoral thesis advisor was Robert E. Hopkins. Frieden is now an Emeritus Professor of Optical Sciences at the University of Arizona.Frieden is best known for his extensive work on Fisher information as a grounding principle for deriving and elaborating physical theory. (Examples are the Schrödinger wave equation of quantum mechanics, and the Maxwell–Boltzmann distribution of statistical mechanics.) Such theories take the form of differential equations or probability distribution functions.Central to Frieden's derivations is the mathematical variational principle of extreme physical information (EPI). This principle builds on the well-known idea that the observation of a \"source\" phenomenon is never completely accurate. That is, information is inevitably lost in transit from source to observation. Furthermore, the random errors that creep in are presumed to define the distribution function of the source phenomenon. As Frieden puts it, \"the physics lies in the fluctuations.\" Finally, the information loss may be shown to be an extreme value. Thus if the observed level of Fisher information in the data has value I, and the level of Fisher information that existed at the source has value J, the EPI principle states that I − J = extremum. In most situations, the extremum is a minimum, meaning that there is a tendency for any observation to faithfully match up with its source.Frieden has used Fisher information and the EPI principle to derive most existing fundamental laws of physics, and some new and existing laws of biology, cancer growth, chemistry, and economics. Frieden argues that Fisher information, especially its loss I − J during observation, and EPI make up a general method for deriving scientific laws.Several reviewers doubt the physical and mathematical correctness of Frieden's ideas; see, for example, Raymond F. Streater's Lost Causes in Theoretical Physics: Physics from Fisher Information, and Cosma Shalizi's review of Physics from Fisher Information.".
- B._Roy_Frieden wikiPageExternalLink physics-from-fisher-info.
- B._Roy_Frieden wikiPageExternalLink VII.
- B._Roy_Frieden wikiPageExternalLink article.ns?id=mg16121746.800.
- B._Roy_Frieden wikiPageExternalLink Frieden.htm.
- B._Roy_Frieden wikiPageExternalLink Fisher_Information.htm.
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- B._Roy_Frieden wikiPageWikiLink Biology.
- B._Roy_Frieden wikiPageWikiLink Cancer.
- B._Roy_Frieden wikiPageWikiLink Category:20th-century_American_mathematicians.
- B._Roy_Frieden wikiPageWikiLink Category:21st-century_American_mathematicians.
- B._Roy_Frieden wikiPageWikiLink Category:American_physicists.
- B._Roy_Frieden wikiPageWikiLink Category:Living_people.
- B._Roy_Frieden wikiPageWikiLink Category:University_of_Arizona_faculty.
- B._Roy_Frieden wikiPageWikiLink Category:University_of_Rochester_alumni.
- B._Roy_Frieden wikiPageWikiLink Category:Year_of_birth_missing_(living_people).
- B._Roy_Frieden wikiPageWikiLink Chemistry.
- B._Roy_Frieden wikiPageWikiLink Differential_equation.
- B._Roy_Frieden wikiPageWikiLink Economics.
- B._Roy_Frieden wikiPageWikiLink Extreme_physical_information.
- B._Roy_Frieden wikiPageWikiLink Fisher_information.
- B._Roy_Frieden wikiPageWikiLink Mathematical_physics.
- B._Roy_Frieden wikiPageWikiLink Maxwell–Boltzmann_distribution.
- B._Roy_Frieden wikiPageWikiLink New_Scientist.
- B._Roy_Frieden wikiPageWikiLink Optics.
- B._Roy_Frieden wikiPageWikiLink Physics.
- B._Roy_Frieden wikiPageWikiLink Probability_distribution.
- B._Roy_Frieden wikiPageWikiLink Quantum_mechanics.
- B._Roy_Frieden wikiPageWikiLink Ray_Streater.
- B._Roy_Frieden wikiPageWikiLink Robert_E._Hopkins.
- B._Roy_Frieden wikiPageWikiLink Schrödinger_equation.
- B._Roy_Frieden wikiPageWikiLink Statistical_mechanics.
- B._Roy_Frieden wikiPageWikiLink The_Institute_of_Optics.
- B._Roy_Frieden wikiPageWikiLink University_of_Arizona.
- B._Roy_Frieden wikiPageWikiLink University_of_Rochester.
- B._Roy_Frieden wikiPageWikiLink Variational_principle.
- B._Roy_Frieden wikiPageWikiLinkText "B. Roy Frieden".
- B._Roy_Frieden wikiPageWikiLinkText "Frieden, B. R.".
- B._Roy_Frieden wikiPageWikiLinkText "Frieden, B. Roy".
- B._Roy_Frieden wikiPageUsesTemplate Template:Cite_book.
- B._Roy_Frieden subject Category:20th-century_American_mathematicians.
- B._Roy_Frieden subject Category:21st-century_American_mathematicians.
- B._Roy_Frieden subject Category:American_physicists.
- B._Roy_Frieden subject Category:Living_people.
- B._Roy_Frieden subject Category:University_of_Arizona_faculty.
- B._Roy_Frieden subject Category:University_of_Rochester_alumni.
- B._Roy_Frieden subject Category:Year_of_birth_missing_(living_people).
- B._Roy_Frieden hypernym Frieden.
- B._Roy_Frieden type List.
- B._Roy_Frieden type Scientist.
- B._Roy_Frieden type List.
- B._Roy_Frieden type Mathematician.
- B._Roy_Frieden type Redirect.
- B._Roy_Frieden type Scientist.
- B._Roy_Frieden comment "B. Roy Frieden is an American mathematical physicist.Frieden obtained a Ph.D. in Optics from The Institute of Optics at the University of Rochester. His doctoral thesis advisor was Robert E. Hopkins. Frieden is now an Emeritus Professor of Optical Sciences at the University of Arizona.Frieden is best known for his extensive work on Fisher information as a grounding principle for deriving and elaborating physical theory.".
- B._Roy_Frieden label "B. Roy Frieden".
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- B._Roy_Frieden sameAs بی_روی_فریدن.
- B._Roy_Frieden sameAs Roy_Frieden.
- B._Roy_Frieden sameAs m.03m79z.
- B._Roy_Frieden sameAs Q4834189.
- B._Roy_Frieden wasDerivedFrom B._Roy_Frieden?oldid=703567048.
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