DOCUMENT 12 ON KALUZA'S THEORY 69 VII 3 (1 1) gaB = ydaB = u Xa XB (daB = 1,0, BB == aa 0x) 2) g14, g24, g34, g15, g25, g35 3) g44, g45, g55, y, u .(V x12 + x2 + x32 = )r r = g44 g55 - g452 (2) (4) r2H g'A) At y2 Hr3dr [(g44 12)' r23' g44 1'2 r2 j 4 g44 XX r 0. (5) g55, g45 ft2)2(g44g'45g'44g45~~ (A2)' r2 A2 (g44 g'45 g'44 g46) A2 (6) r2 1~ (g44 g'45 g'44 g45) (7) (1 08/12/2012 CPAE_13_final 165 of 1076 (g44 g'45 g'44 g45) (7) (1