منابع مشابه
Non-negative Observables Are Squares
For [S],1 whose notation and results we use without further comment, the question of whether or not a non-negative observable is the square of an observable is left open. Our positive solution of this question eliminates one of the hypotheses in a pair of propositions [S.Theorem4 and Corollary 4.1 ] in that paperand so nowwe knowthat without exception a pure state of a subsystem may be extended...
متن کاملNormal Numbers Are Normal
A number is normal in base b if every sequence of k symbols in the letters 0, 1, . . . , b− 1 occurs in the base-b expansion of the given number with the expected frequency b−k. From an informal point of view, we can think of numbers normal in base 2 as those produced by flipping a fair coin, recording 1 for heads and 0 for tails. Normal numbers are those which are normal in every base. In this...
متن کاملOn spun-normal and twisted squares surfaces
Yoshida in [6] and Tillmann in [3] describe di erent methods of producing surfaces within a 3-manifoldM with boundary from ideal points of the deformation variety of M , given a particular ideal tetrahedralisation of M . The Yoshida construction builds a surface from twisted squares within the tetrahedra, the Tillmann construction results in a spun-normal surface relative to the tetrahedra. In ...
متن کاملWhy are Normal Distributions Normal?
We seem to be surrounded by bell curves—curves more formally known as normal distributions, or Gaussian distributions. All manner of things appear to be distributed normally: people’s heights, sizes of snowflakes, errors in measurements, lifetimes of lightbulbs, IQ scores, weights of loaves of bread, and so on. I argue that the standard explanation for why such quantities are normally distribut...
متن کاملEven Order Regular Magic Squares Are Singular
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ژورنال
عنوان ژورنال: Fundamenta Mathematicae
سال: 1949
ISSN: 0016-2736,1730-6329
DOI: 10.4064/fm-36-1-35-39