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Eigenfunction DiffeomorphismPosted by xjgraviton on November 11, 2002 at 01:54:19: Hello Perturbative methods probably do not hold the key to a A diffeomorphism is basically a map between manifolds An "inverse expansion" would be material and radiative I figure that both expansion AND inverse expansion ARE Remember the "T-Duality" of string theory? A type of R<------>[1/R] Really T-Duality says: R<------->[(L_st)^2]/R The physics for a circle of radius R is the same for a So a type of diagram for the "self organizing"(self {<-{->{U}<-}->} Infinity and continuity would be explained as quantum How can the "relativistic effects" be described by In quantizing spacetime geometry, we won't get
With flat sheets, foliations of space, or equatorial planes, the light cone cross section corresponding to a circle would be a "rotated" light cone near a massive object. Using abstract generalizations of course! The two light cones form a relationship, describing degrees of It should be possible to derive a set of equations from these Non-Euclidean geometry has great explanatory power, yet there must be a type of "dynamics" involved, possibly related to a type of configuration space or varying density gradients. Static geometry cannot be the whole, complete explanation. Mathematician Roger Penrose demonstrated how many of the properties of three dimensional space can be created out of networks of spinors, the simplest possible "quantum mechanical objects". These spinors are used to define the two possible values of an electron's spin. He then generalized the spinor into a mathematical quantity called a twistor. The mathematics of complex numbers is used, which makes twistors hard to visualize. Geometrically, the notion of a point becomes more complicated, and secondary, defined by a conjunction of many individual twistors. A daunting approach mathematically. Theoretically speaking, does the "absolute spacetime metric" Time cannot merely be added on to a theory via an assumption as in the ADM formalism, whith Lorentzian manifolds, diffeomorhic to R x S with manifold S reresenting "space" and "t" an element of R representing phi: M---> R x S We need not invoke the "lumeniferous aether". The absolute metric must be a type of "meta-relation". The laws of physics would be distributed over space-time. Thus the equivalence principle results from the law: conservation of Dr. Georg Cantor proved that a one dimensional line of length "s" has the same number of points as the 2-D plane with sides "s". In fact, the number of points on the line would be the same as 3-D, 4-D, ... n-D and higher dimensional space. Very interesting. The gravitational field, described by the metric of spacetime g_uv , is generated by the stress-energy tensor T^uv of matter. Various field equations relating g_uv to T^uv have been proposed. The most succsessful have been the Einstein field equations which are of course, the foundation of general relativity. G_uv == R_uv - 1/2 g_uv R = 8pi T_uv where R_uv and R are the Ricci tensor and scalar curvature derived from the metric g_uv , and G_uv is the Einstein tensor. The equations are non-linear, since the left hand side is not a linear function of the metric. When the gravitational field is weak, the geometry of spacetime is nearly flat and the equation is: g_uv = n_uv + h_uv where all h_uv are << 1. This linearized theory is very interesting. But really, what is needed is a quantum theory of gravity-spacetime. Successive sheets of space, sequential hypersurfaces parameterized by time, where time is not added on as an assumption. Since the geometry of the universe can be explained as a type of As Lee Smolin says: "There is nothing outside the universe". A closed circuit. I am reading the book "A Journey Into Gravity and Spacetime" by John Archibald Wheeler. OK, "A directed or 'oriented' line - a one dimensional 'manifold' - has The starting point is "negative". The end point is "positive". -A + A = 0. -A------0------A The starting point is also the ending point. ---------> "The zero dimensional boundary of a one dimensional boundary of a two dimensional region is zero". A true statement. "The one dimensional boundary of the two dimensional boundary of a three dimensional region is zero". A true statement. Space is three dimensional. A cube or tetrahedron is three dimensional. Also symmetrical Energy and momentum are conserved.
Russell E. Rierson -------------------------------------------------------------------------------- Follow Ups: (Reload page to see most recent)
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