Well-pointed Category

In category theory, a category with a terminal object is well-pointed if for every pair of arrows such that, there is an arrow such that . (The arrows are called the global elements or points of the category; a well-pointed category is thus one that has "enough points" to distinguish non-equal arrows.)


Famous quotes containing the word category:

    I see no reason for calling my work poetry except that there is no other category in which to put it.
    Marianne Moore (1887–1972)