My references to epsilon_0 and mu_0 reveal my MKS-centrism. However, in arbitrary units, we may write electrostatic and magnetostatic force laws analogous to Newton's...

Hi, The assumptions about simple kinetic theory of gases include:- 'Collisions of the molecules with the walls of the container are elastic' What experimental evidence is...

Has anyone studied the h- (or q-) calculus for the case where h is a function rather than a constant? I.e. the h-derivative becomes f(x + h(x)) - f(x) ------------------ ...

Oz wrote: I get the feeling (and some evidence) that there are quite a lot of lurkers on the 'bears' tangle of threads. Could I make two requests? 1) Post...

In the 18th and 19th centuries, Newton's mathematical description of motion using calculus and his model for the gravitational force were extended very successfully to the...

I've been reading on Bohm's hidden variables (HV) theory and have a question about the stated inability to choose between that and the Copenhagen Interpretation (CI). My...

Someone posted the following equation to sci.astro.research: n = Nb/Ny = (omega_b*Ey)/(omega_y*Eb) (Where n equals the baryon to photon ratio of the universe, Ey=2.7kT...

Ralph Hartley wrote in message ... Tony Smith wrote: My main comment is that a cubic lattice might not be...

Hello all hardworking mathematicians! I am trying to solve the diffusion equation given by Fick's law using mathematica. The equation is as follows f =...

On Tue, 8 Jul 2003, Arnold Neumaier wrote: If the observer actually records something, this must be a fact in the universe, and hence be uniquely derivable from the ...

In Finite Mathematics with Business Applications I read that a probability transition matrix tends, on repeated evalulation, to converge to the probability distribution of...

Hi, What is the meaning of a negative frequency? (in the context of the spectrum of a stochastic process) I have seen time to time that we extend integration to negative...

Many problems in the calculus of variations result in a minimum problem, but it has long been known that the solution in general will be stationary (either min, max, or...

The First International Conference on p-adic Mathematical Physics, p-ADIC MATHPHYS.2003 Steklov Mathematical Institute ...

I am trying to understand some elementary topics on compactification and accelerating universes and stuff. But I can't find anywhere what is meant with the term "hyperbolic...

GR Textbooks often show collapse in Kruskal coordinates, for example, MTW Fig 32.1(b). Once you know the geodesic of the surface in Schwarzschild coordinates, you simply...

This is surely an open question We can, at least in principle, model any particle with a wave function that is almost certainly aperiodic, a soliton that preserves its size...

/** * 'Pirated Dreams' renders his nick expired, as he finally managed to get * his butt inside a university, which implies that he may, now, call his * dreams (of...

It is always possible to transform to Gaussian normal coordinates ds^2 = - dt^2 + h_{ij}*dx^i*dx^j in the vicinity of a spacelike hypersurface. If the determinant...

hi there , would anyone know a source to get a visual or model of the string theory thankyou _________________________________________________________________ Hotmail is...