KIBU2023-03-292023-03-292022-11-24http://erepository.kibu.ac.ke/handle/123456789/9040SPC 323:Mathematical physics 11enAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/SPC 323:Mathematical physics 11SPC 323Mathematical physics 11Other