## Proceedings of the International School of Physics "Enrico Fermi.", Volume 72N. Zanichelli, 1979 - Nuclear physics |

### From inside the book

Results 1-3 of 80

Page 74

In the case of a magnitude C represented by an

spectrum , von NEUMANN concludes that , after a measurement which localizes

the value c of C to the set s , the state vector of the system can be anywhere in the

...

In the case of a magnitude C represented by an

**operator**with a continuousspectrum , von NEUMANN concludes that , after a measurement which localizes

the value c of C to the set s , the state vector of the system can be anywhere in the

...

Page 87

In quantum mechanics , the statistics of a system is specified by a statistical

atomic events ( i . e . projection

spanned ...

In quantum mechanics , the statistics of a system is specified by a statistical

**operator**W which may be represented as W ... the P are projection**operators**ontoatomic events ( i . e . projection

**operators**onto 1 - dimensional subspacesspanned ...

Page 93

Try ( AP : ) = Try ( A ' P ; ) for all Pi , or , alternatively , ii ' ) Trw ( AZ ) = Trw ( AZ ) for

all Z compatible with the projection

map A → A Palpal . . . , where AP is von Neumann ' s

Try ( AP : ) = Try ( A ' P ; ) for all Pi , or , alternatively , ii ' ) Trw ( AZ ) = Trw ( AZ ) for

all Z compatible with the projection

**operators**P . . UMEGAKI shows [ 21 ] that themap A → A Palpal . . . , where AP is von Neumann ' s

**operator**[ 22 ] PAP + ( 1 ...### What people are saying - Write a review

We haven't found any reviews in the usual places.

### Contents

Gradual infiltration of probabilitys laws into physical sciences | 1 |

Statistical fluctuations | 10 |

Introduction | 21 |

Copyright | |

24 other sections not shown

### Other editions - View all

### Common terms and phrases

according additive appear applied approach argument assume atoms Borel called classical closed complete concept consider constant corresponding countable course defined definition derived described determined dialog discussion distribution dynamics edited effect elementary elements energy equal equation equivalent example exists experiment expressed fact field final finite formal frequency function geometry give given Hence implies initial interpretation lattice limit logical mass material mathematical means measurement motion natural observable obtain operator particle particular Phys physical positive possible precision present principle probability problem proof propositions proved quantity quantum mechanics question reason refer relation relative represented requirement respect result rules satisfies sense sequence space space-time special relativity statistical structure theorem theory transformation turn unit Universe vector