Contrary to the above equation, the original Einsteinian equation was <math>R_{\mu\nu} = 8 \pi T_{\mu\nu}</math>, where <math>R_{\mu\nu}</math> is ''"[[Ricci tensor]]"'' and <math>T_{\mu\nu}</math> is ''"[[Stress-energy tensor]]"'', which is much simpler and does not contain <math>G_{\mu\nu}</math> that was introduced by authors of 1973 ''"Gravitation"'' to suggest the need for expansion of the universe but turned out to be not necessary when ''"[[Hubble Time Dilation]]"'' (HTD) entered the picture in 1985 and explained the redshift in stationary ''"[[Einstein's universe]]"'' <ref>See ''"[[Einsteinian gravitation]]"''.</ref>. | Contrary to the above equation, the original Einsteinian equation was <math>R_{\mu\nu} = 8 \pi T_{\mu\nu}</math>, where <math>R_{\mu\nu}</math> is ''"[[Ricci tensor]]"'' and <math>T_{\mu\nu}</math> is ''"[[Stress-energy tensor]]"'', which is much simpler and does not contain <math>G_{\mu\nu}</math> that was introduced by authors of 1973 ''"Gravitation"'' to suggest the need for expansion of the universe but turned out to be not necessary when ''"[[Hubble Time Dilation]]"'' (HTD) entered the picture in 1985 and explained the redshift in stationary ''"[[Einstein's universe]]"'' <ref>See ''"[[Einsteinian gravitation]]"''.</ref>. |