In the production function equation,

		and upper case K stands for physical capital stock per work,while a lower case k denotes the aggregate physical capitalstock
		and upper case K stands for aggregate physical capital stock,while a lower case k denotes physical capital per worker
		and upper case K stands for aggregate human capital stock, whilea lower case k denotes human capital per worker
		and upper case K stands for aggregate output, while a lower casek denotes output per worker