Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1311-7569-5 |
Объём: | 80 страниц |
Масса: | 141 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
High Quality Content by WIKIPEDIA articles! In mathematics, two elements x and y of a set partially ordered by a relation <= are said to be comparable if and only if x <= y or y <= x (or in terms of the strict version of the partial order, if and only if x < y or y < x or y = x). For example, two sets are comparable with respect to inclusion if and only if one is a subset of the other. The comparability relation is denoted by the falsum symbol " ". Comparability forms a symmetric relation: x y if and only if y x. Its complement is called incomparablility and denoted by "||". Thus, for every pair of elements x and y of a partially ordered set, exactly one of the following two assertions holds: x y and x || y.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.