Cultural/geo-political, joint, tactical, and technical
The domain and range can be the whole of the real numbers, or some subsets of these sets.
A set with n elements has 2n subsets. The number of proper subsets is one less, since 2n includes the set itself.
Not necessarily. But common knowledge is considered to be in the public domain.
cognitive domain refers to knowledge questions
You define groups by selecting non-overlapping subsets of the domain which, together, cover the whole domain. For each group you combine responses for all units whose domain element (explanatory or independent variable) falls within the group.
Brain dump is a domain where human knowledge and intelligence is dumped with no resource utility while knowledge dump is waste of knowledge in any domain.
domain experts
meaning of proper subsets
Not necessarily. There are series over all kinds of subsets and supersets of the set of real numbers.
A probability density function assigns a probability value for each point in the domain of the random variable. The probability distribution assigns the same probability to subsets of that domain.
Relational tuple calculus has its variables range over tuples, where domain relational calculus ranges its variables over the field values, or domain elements. Both types of calculus are subsets of first order logic.
An element doesn't have subsets. Sets can have subsets.