Math

Black Watch, Shekhina, Séances, and Freemasonry
Although I have never, to the best of my knowledge, attended an actual seance (or at least anything that was billed as such), Well, you were there in spirit.... Frank Reid (couldn't let that one go by) ... 14 May 2010 00:52

3D shapes of the Prime Number Sums - 3D_solids.JPG (0/1)
<A HREF="http://mister-computer.net/index.htm">WEB Site"</A> -- Yours truly RD email mr.computer(a)pobox.com ... 13 May 2010 19:24

questions about primes
Does anyone know how to prove that there are "as many" primes congruent to 1 as to 3 modulo 4? My technical meaning of "as many" is this: Let A(n) be the number of primes < n that are = 1 mod 4 and let B(n) be the number of primes <n = 3 mod 4. Is it true that A(n) / B(n) approaches 1 as n goes to infinity?... 14 May 2010 09:30

singular matrix- integral
Hi! I have one question about the specific integral. Assume that A is singular so it is not invertible ( we also kno that A is stiff and semi-definite matrix so ||e^{hA}||<1). I have in this moment no idea how to calculate Int_{0}^{h} ( A* exp(h-s)A ) ds Int-integral Thank you for help ! Magdal... 17 May 2010 05:52

math category of probability Chapt 3, Telescope as the the finest Distance tool measure in astronomy; 400 million light years as 1 atom/m^3 #84; ATOM TOTALITY
Archimedes Plutonium wrote: (snipped) --- from Wikipedia --- classical electron radius, also known as the Lorentz radius or the Thomson scattering length, is based on a classical (i.e., non-quantum) relativistic model of the electron. Its value is calculated as 2.8 x 10^-15 meters --- end --- ... 13 May 2010 14:56

math category of probability Chapt 3, Telescope as the the finest Distance tool measure in astronomy; 400 million light years as 1 atom/m^3 #83; ATOM TOTALITY
Enrico wrote: (snipped) Start here (?) http://mathworld.wolfram.com/OrchardVisibilityProblem.html Points and lines in a lattice http://mathworld.wolfram.com/VisiblePoint.html Invisible Infinities: Determining the Fraction of Lattice Points Visible from the Origin in the Third Dimensio... 13 May 2010 13:49

the four color theorem...
First, I have to say that I'm not a mathematician. Maybe that's why I don't understand why the four color theorem has been so difficult to prove. The theorem states that no more than four colors are necessary to color the regions of any map to separate them. My understanding goes like this: First you try to draw... 20 May 2010 23:46

integral
Hi, Is there somebody who can give the solution for the integral of : 1/ln(x^x) where ln is the natural logaritme? Thanks for a response ... 14 May 2010 18:20

"CRUCIAL THEOREM IN THERMODYNAMICS
On May 13, 8:01 am, Monsieur Turtoni <turt...(a)fastmail.net> wrote: spam How does his cut and pastes differ from your own? Can you not read that he is posting to sci.logic, alt.philosophy, sci.astro, sci.math At least he has content and doesn't screw up the threads. ... 13 May 2010 03:58

spam
spam ... 13 May 2010 02:54