1,562 reputation
21648
bio website axiomsofchoice.org
location
age 15
visits member for 3 years, 11 months
seen 10 hours ago

dr dr dr! im cia he wasnt alone uh you dont get to bring friends theyre not my friends dont worry no charge for them and why would i want them they were trying to grab your prize they work for the mercenary the masketta man bane aye get them on board ill call ittin the flight plan i just filed with the agency lists smee maimen doctor pavelheer button lee juan ovyu first one to talk gets to stay on my aircraft who paid you to grab dr pavel he didnt fly so good who wants to try next tell me about bane why does he wear the mask a lotta loyalty for a hired gun or perhaps he's wondering why someone would shoot a man before throwing him out of a plane at least you can talk who are you it doesnt matter who we are what matters is our plan if i pull that off will you die it would be extremely painful youre a big guy for you was getting caught part of your plan of course dr pavel refused our offer in favor of yours we had to find out what he told you nothing i said nothing well congratulations you got yourself caught sir now whats the next step of your master plan crashing this plane with no survivors no they expect one of us in the wreckage brother have we started the fire yes the fire rises calm down doctor nows not the time for fear that comes later


Mar
12
revised Kerr metric Christoffel symbols
added 77 characters in body
Mar
12
answered Kerr metric Christoffel symbols
Mar
11
comment Why isn't the path integral rigorous?
It's 'excellent and pedagogical' compared to what other presentation?
Mar
10
comment Which values of the Riemann zeta funtion at negative arguments come up in physics?
I guess your thesis is finished by now, where can it be read?
Mar
6
comment General solution of the four-vector with each component satisfying the wave-equation
@KyleKanos: Mhm, how do you define homogeneity, if you have to know the equation to see it it's homogenous? If $D$ is any operator, the equation $D\phi=0$ is homogenous w.r.t. $\phi$ and the equation $D\phi=f$ (where $f$ a function of $\phi$) isn't. Btw. the field $A(x):=\int B(p)\,{\mathrm e}^{i\,p,x}\,{\mathrm d}p$ is also a solution to the Helmholtz equation $(\frac{\partial^2}{\partial x^2}+k^2)A(x)=0$, if $p^2=k^2$ for each $p$.
Mar
6
comment General solution of the four-vector with each component satisfying the wave-equation
@KyleKanos: Greens functions don't concern a differential equation which is homogenous everywhere. Regarding thread pointing out that $(ip)^2=-m^2$ might help.
Mar
2
comment How does a heated constant volume flow behave, for an expanding flow tube leading into the free atmosphere
@tpg2114: Thanks for the response. Something more: Do you know rules of thumb to guess the temperature drop due to heat loss through the metal wall? (That might also depend on the metal in some way, I don't know how.)
Feb
27
revised How does a heated constant volume flow behave, for an expanding flow tube leading into the free atmosphere
added 34 characters in body
Feb
27
revised How does a heated constant volume flow behave, for an expanding flow tube leading into the free atmosphere
added 145 characters in body; edited tags
Feb
27
asked How does a heated constant volume flow behave, for an expanding flow tube leading into the free atmosphere
Feb
26
revised Units inside a logarithm
added 33 characters in body
Feb
26
answered Units inside a logarithm
Feb
26
comment How does a knife cut things at the atomic level?
You say "For this reason, many materials (such as metals, which are soft) are intentionally manufactured to be grainy." Do you mean this literally - i.e. are the manufacturers aware of the theory - or has is just grown as the best solution empirically?
Feb
14
revised What is the interpretatation of individual contributions to the Shannon entropy?
added 173 characters in body
Feb
14
comment What is the interpretatation of individual contributions to the Shannon entropy?
Just stumbled upon $\frac{1}{e}$ as probability: 37% stopping rule.
Feb
11
comment Is there an accepted axiomatic approach to general relativity?
In light of the two answers already given, and the specification of general relativity via some axioms not even including the field equations, I also want to point those this Wikipedia link with about 50 metric theory alternatives to general relativity.
Feb
11
comment Is there an accepted axiomatic approach to general relativity?
Also, I've seen this paper being linked here, which might contain more info: Especially on how the ideas and notions evolved: General covariance and the foundations of general relativity - eight decades of dispute. These two now got long for a comment, please somebody tell me when I should remove it, after OP got the paper link.
Feb
11
comment Is there an accepted axiomatic approach to general relativity?
You can write down the axioms of Pseudo-Riemannian geometry and identify some of the mathematical quantities with up-in-the-air words like "space", "time", "observer trajectory", etc. I don't think you need the equivalence principle for this shut up an calculate approach, but you can see it realized in Einsteins theory, if you bend your words correctly. Historically, the principle is more of a guiding principle. I'm not sure to what extent it can hold exactly in GR if you furnish your space with bodies which are all of finite width, so that 1d trajectories don't actually describe body paths.
Feb
5
comment What is the interpretatation of individual contributions to the Shannon entropy?
What I meant is that the links point at the same page. You mean the Rényi entropy entropy is less arbitrary because of the interpretations pointed out in the paper?
Feb
5
comment What is the interpretatation of individual contributions to the Shannon entropy?
Yeah, I was thinking about that argument for a second. I guess "I don't know anyone who knows an interpretation for this related quantity either" is indeed more information. Did you intent to post two different links? There are indeed several q-analogs, e.g Tsallis entropy.