computation of two-point objects

*To*: mathgroup at smc.vnet.net*Subject*: [mg131178] computation of two-point objects*From*: Mark Roberts <robemark at gmail.com>*Date*: Sat, 15 Jun 2013 04:26:08 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net

hello, I have been stuck for decades trying to calculate the world function for ds^2=-(1+2\sigma)dv^2+2dvdr+r(r-2\sigma v)(d\theta^2+\sin(\theta)^2d\phi^2) \phi=\n(1-2\sigma v/r)/2 R_{ab}=2\phi_a\phi_b one gets elliptic functions if one try direct method, The trouble with approximations is that it is hard to tell if they converge..... bye, /\/\, -- Mark D. Roberts http://www.violinist.com/directory/bio.cfm?member=robemark http://dl.dropbox.com/u/75603589/cv.pdf http://independent.academia.edu/MarkRoberts/Talks/40121/Very_Short_Survey_of_all_my_Research