In mathematics, a binary relationR on a set X is reflexive if a is R-related to itself for any a ∈ X. For example, "greater than or equal to" is a reflexive relation but "greater than" is not. All equivalence relations and partial orders are reflexive.
All Wikipedia text
is available under the
terms of the GNU Free Documentation License
Search Encyclopedia
Search over one million articles, find something about almost anything!
... living alone who is 65 years of age or older. The average household size is 3.21 and the average family size is 3.51.
In the town the population is spread out with 29.5% ...