In mathematics, and more specifically in naive set theory, the domain of definition (or simply the domain) of a function is the set of input or argument values for which the function is defined. That is, the function provides an output or value for each member of the domain.iven a function f: X â Y, the set X is the domain of f; the set Y is the codomain of f. In the expression f (x), x is the argument and f (x) is the value. One can think of an argument as an input to the function, and the value as the output.
The PMI provides services including the development of standards, research, education, publication, networking-opportunities in local chapters, hosting conferences and training seminars, and providing accreditation in project management.
So that answer will keep your friends and family happy if they should ask you what you do, but here is the long winded, more accurate explanationâ¦. According to the PMI: â During a programâs life cycle, projects are initiated and the program manager oversees and provides direction and guidance to the project managers.Program managers coordinate efforts between projects but do not manage them.elow is a list of the tasks a program manager must perform: 1  Plan the program, ensuring maximum efficiency in resource allocation across projects. 2  Monitor its overall progress, resolving issues and initiating corrective action where necessary. 3  Define the program governance. 4  Manage the program budget.