of infinite extent. I saw just some minutes ago informations about Ads ,I didn't know .Thanks for informations,ideas or concepts. This system is non euclidian.This extrapolation is interesting when we see the infinite numbers of parallell lines thus interesting applications on technology. There are many extrapolations about curvatures ,let's take Gauss ,Lorentz,Rieman....so many equations ,beautiful equations of space and its multiple forms. When we apply the mathematical extrapolation on the mind creativity ,many extrapolations are possible ,the infinity is fascinating indeed when we see some ratios and constants or numbers,sries,.....it's evident that if we insert this mathematical infinity in our extrapolations ,we imagine thus infinite coordonates,...and there all is possible for our creative mind,indeed it's infinite .It's our limits in fact if I can say like behind walls of perception. I am young ,33 years old but since many years I look for understanding of our dynamic physical systems around us .I have quickly been interested in botanic ,ecology,biology,astronomy,math...I understand the infinity concept when we calculate some ratios .But our physical reality is limited ,I don't think all will be in expansion for ever ,I think it exists a maximum volume in Time and after a contraction ,there are many possibilities ,many hypothesis about the spherization ,what is the perfect placement ,the perfect balance with all these gravitations ,thes acretions ,(galaxies,groups of galaxies,stars planets.....a balance exists with a specific volume of space I think .We are going towards this ultim balanced geometry I think,.Our Universe in this logic improves itself