Math

What math level is required?
Hi. I saw this: http://news.bbc.co.uk/2/hi/uk_news/education/6589301.stm What sort of math level would that require (to be able to do problems like the one on that Chinese test)? ... 22 Jan 2010 02:56

fantastic irony of mathematics-- well-define Infinity but loseout on multiplication and powerset and addition #296; Correcting Math
On Wed, 13 Jan 2010 19:09:07 -0800, Archimedes Plutonium wrote: [The usual ramblings.] For how many years have you been posting your junk now? 15? 20? Are you going to get a life any time soon? ... 14 Jan 2010 12:26

Eliminate a, b, c;
Eliminate a, b, c; a + b + c = 0, ((b - c)/a + (c - a)/b + (a - b)/c)*(a/(b - c) + b/(c - a) + c/(a - b)) = k ... 14 Jan 2010 23:36

Has Eric Gisin Ever Run a Climate Model? WAS: Climate Models . . .
The post below indicates a massive ignorance of climate modeling. Those who wish to learn something about this interesting subject could start here: EdGCM.com On Jan 7, 2:45 pm, "Eric Gisin" <er...(a)nospammail.net> wrote: Google "irreducible imprecision" shows this has been discussed for 3+ years. h... 14 Jan 2010 10:09

Big Bang theory is falsified by diffraction pattern of galaxies and age variance of neighboring galaxies; (use in 4th)
Alright, this is a diffraction pattern of light waves on a straightedge |;;;;|  |;;;;;|   |;;;;;;|    |;;;;;;;|   |;;;;;|   |;;;;;|  |;;;;;| |;;;;|  |;;;;;|   |;;;;;;|    |;;;;;;;|   |;;;;;|   |;;;;;|  |;;;;;| |;;;;|  |;;;;;|   |;;;;;;|    |;;;;;;;|   |;;;;;|   |;;;;;|  |;;;;;| |;;;;|  |;;;;;|   |;;;;;;|    |;;;... 14 Jan 2010 15:49

Do representations uniquely determine groups?
I recently read (in 'Symmetries in Physics' by McVoy) that all groups "possess a definite, unambiguous (and to some extent distinctive) set of multiplets". Does anyone know what the theorem is that establishes the extent to which a knowledge of the representations suffices to determine the group - or just a good pl... 15 Jan 2010 02:50

converting spherical coords - 2nd reply
Grover Hughes wrote: On Jan 13, 2:18 am, William Elliot <ma...(a)rdrop.remove.com> wrote: On Tue, 12 Jan 2010, Joe wrote: I've got an app that's sending me some spherical coordinates such as What's an app? A misspelling of ape? 4807.038,N 01131.00,E That's not spherical coordinates. ... 13 Jan 2010 16:36

How does one do an intergal which contains sqrt(dx) as the intergatio
It is absurd on the face of it. That never stopped the physicists! ... 19 Jan 2010 03:35

finding components of a given vector - riddle of the day
William Elliot wrote: On Tue, 12 Jan 2010, aegis wrote: Suppose I have the vector r = OP where OP represents a vector beginning from the origin and ending at some point, say P(x,y). So r is a vector in R^2. How could I express the components in terms of theta_1 and theta_2? Why... 14 Jan 2010 03:37

Make sure to ignore this question.
Consider 3 trials of a random variable { X | H, T } . The result is no different than a single trial of the random variable { X | HHH, HHT, HTT, THH, THT, TTT, HTH, TTH } . How do we transform from one situation to the other ? Is it enough to say they are "equivalent" ?? ... 15 Jan 2010 08:15