Feb
25
comment Superposition in classical Mechanics
the simplest approach to derive the group structure from the differential equation is to expand in power series in terms of the nonlinear coeffs. and find the structure constants for each power
Feb
24
comment Superposition in classical Mechanics
ugh. Some nonlinear differential equations retain a Lie group symmetry of solutions, meaning that $\phi_1$ and $\phi_2$ are solutions, imply that $G(\phi_1, \phi_2)$ will also be a solution
Feb
20
accepted git rebase: why i have to resolve the same conflict over and over
Feb
19
comment Is the probabilitistic distribution of the digits in the Chaitin's constant computable?
that would be true if there were Turing machines for which their halting was undecidable. But, for As far as I can tell, no theorem asserts that, it is only asserted that there is no general algorithm to evaluate halting for any machine
Feb
17
comment Detectability of interstellar messages
our current ways of organizing scientific knowledge make it into very deep, parceled trees with so much repeated work across domains, that doesn't always benefit from the progress that happened in the rest. Science needs more polymaths and generalists desperately
Feb
17
awarded Notable Question
Feb
17
answered Detectability of interstellar messages
Feb
15
asked Is the probabilitistic distribution of the digits in the Chaitin's constant computable?
Feb
11
comment How come some people are claiming that the Big Bang never happened?
+1, so it seems they would have done a much more useful job if they would have just focused on arguing their 'Bohmian trajectories are better geodesics in the early universe' point better, rather than assuming everyone would agree with it
Feb
11
awarded Nice Question
Feb
10
comment Vertex insertions as functionals
@Hindsight, here is a pretty good exposition of the argument: mth.kcl.ac.uk/~streater/lostcauses.html#XXII
Feb
8
revised Is energy-momentum of curvature a boundary/holographic density?
added 24 characters in body
Feb
8
asked Is energy-momentum of curvature a boundary/holographic density?
Feb
2
comment Is the method of images applicable to gravity?
Any physical systems where such a boundary condition would be imposed would be interesting even if exotic, as the induced mass surface charge at the nearest point between the surface and the positive mass should be predominantly negative energy
Jan
31
answered Is the method of images applicable to gravity?
Jan
31
revised Why is Xenon favored as the propellant in electric thrusters?
added 5 characters in body
Jan
27
revised Self-Accelerating wavepackets: What are they and can they impulse a spaceship?
added 247 characters in body
Jan
27
answered Why is Xenon favored as the propellant in electric thrusters?
Jan
27
comment Validity of topological thermodynamics?
It might still be wrong, no doubt about that. But verifying that usually requires more in-depth analysis and more eyes over the ideas. There is no easy way to validate science, but what you are doing is exactly the right thing: find other opinions, raise attention to the subject. Who knows? maybe his/her ideas are valid, and they are simply poorly known by the community. That happens a lot
Jan
27
comment Validity of topological thermodynamics?
is not unheard that scientific ideas or specific original viewpoints sometimes are promoted by a single person. Usually a first pass over a text can bring to attention factual errors that might point to what you would call a 'crackpot', but if errors are not evident on a first read to someone at least aquainted with the subject matter, is not fair anymore to call it 'crackpottery'.
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