منابع مشابه
Broken symmetry revisited
In general, a physical system consists of a finite or infinite number of degrees of freedom which may or may not interact. The dynamics is prescribed by a set of evolution equations which follow from varying the action with respect to the different degrees of freedom. A symmetry then corresponds to a group of transformations on the space time coordinates and/or the degrees of freedom that leave...
متن کاملFoundations of Symmetry Breaking Revisited
Puget’s article “On the Satisfiability of Symmetrical Constraint Satisfaction Problems” [Puget, 1993] is widely acknowledged to be one of the founding papers in symmetry breaking (see for example [Flener et al., 2006; Rossi et al., 2006; Walsh, 2006]). To date, Puget’s definition of a valid reduction seems to be the only common ground that all authors on static symmetry breaking constraints agr...
متن کاملResource bounded symmetry of information revisited
The information contained in a string x about a string y is the difference between the Kolmogorov complexity of y and the conditional Kolmogorov complexity of y given x, i.e., I(x : y) = C(y) − C(y |x). The Kolmogorov–Levin Theorem says that I(x : y) is symmetric up to a small additive term. We investigate if this property also holds for several versions of polynomial time bounded Kolmogorov co...
متن کاملFoundations of Symmetry Breaking Revisited–Revised
Puget’s article “On the Satisfiability of Symmetrical Constraint Satisfaction Problems” [Puget, 1993] is widely acknowledged to be one of the founding papers in symmetry breaking (see for example [Flener et al., 2006; Rossi et al., 2006; Walsh, 2006]). To date, Puget’s definition of a valid reduction seems to be the only common ground that all authors on static symmetry breaking constraints agr...
متن کاملChaotic attractors with cyclic symmetry revisited
Chaotic attractors generated by the iteration of polynomial functions with cyclic symmetry have been the subject of recent study. A new formulation is investigated which generates cyclic symmetry using arbitrary functions. This allows the use of diverse function classes including functions with various types of singularities. The resulting images have significantly more diversity than those ari...
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ژورنال
عنوان ژورنال: Computers & Mathematics with Applications
سال: 1989
ISSN: 0898-1221
DOI: 10.1016/0898-1221(89)90143-0