Back From Praha to Zurich, I met my close friend , Mathematic expert Marcell Grossman. He assisted me to find the mathematic's reference that rather strange for me when I was in Paten Swiss Offrice in Bern. This is the fisrt time I learn the creation result of Curbastro Ricci and the Riemann report.
I sked to him whether my problem,can be solved by Riemann thory, Does the Invarian from the line element sufficient to determine the whole coefisien that I was looking for.? Next , I have collaborated with him in writing the report in 1913, eventhough the real gravity formula has not been intrioduced at that time. The further investigation by Riemann Theory, Unfortunately resulting alot of conclusion that against my expectation .
2 years pass when I still think about to solve this problem. Finally I found a mistake in calculation previously. I return to try to got the right gravity formulation based on Invarian theory. After 2 weeks work , the last answer appear.
After 1915 I start do the cosmology problem. My research related to geometry and time of universe. This Research is based on the discussion of general relativity limited theory dan Mach languidness argument. Eventhough I dont know how far the affect of Mach idea to this general relativity substantion from the languidness . I was sure that this big thought is my basic philosophy.
First of all I try to make the limit condition of Gravity formulation become invarian. The end I even can erase this limitation by assumption that the universe close characteristically. By thide I succeed to sove the cosmology problem. As the result I got the languidness appear as one relative character between the material and must disappear if there is no other thing that interacted with it. I am sure this important character cretae this general relaticity theory satisfy , even in epistemology view.
By this way I want to finish the story of how I build this Relativity theory.
Thanks alot (Translated by terry Mart and re-transalated by WR)