In set theory, an ordinal number, or ordinal, is a generalization of ordinal numerals (first, second, n th, etc.) aimed to extend enumeration to infinite sets. [1]

Counting realizes a temporal, first-order representation of the ordinal structure of the quantity of such a given set.

Feb 19, 2021 · 根据变量可度量程度的由低到高，可将其依次划为 nominal, ordinal, interval, ratio 四种类型。其中，nominal, ordinal data 属于 categorical data，是对对象的一种定性描 …

Sep 19, 2025 · 理解 ordinal() 方法对于有效地处理枚举类型、进行逻辑判断和数据处理非常有帮助。 本文将详细介绍 ordinal() 方法的基础概念、使用方法、常见实践以及最佳实践。

6. Represents the quarter ordinal of a year in a manufacturing calendar. 表示 生产 日历 中 每 一 年 的 第 几个 季度。

The contexts of some problems called on the cardinal properties of numbers -- the quantity of elements in a set -- others on their ordinal properties -- their position in an ordered list.

Dec 3, 2025 · In common usage, an ordinal number is an adjective which describes the numerical position of an object, e.g., first, second, third, etc. In formal set theory, an ordinal number …

Jul 23, 2025 · Ordinal Numbers are numbers that are used to represent position, rank or order in a sequence. They denote the position or order of an element in a sequence, such as "1st - …

The meaning of ORDINAL NUMBER is a number designating the place (such as first, second, or third) occupied by an item in an ordered sequence.

Definition of ordinal noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.