- In set theory, an
ordinal number, or
ordinal, is a
generalization of
ordinal numerals (first, second, nth, etc.)
aimed to
extend enumeration to infinite...
-
other languages,
different ordinal indicators are used to
write ordinal numbers. In
American Sign Language, the
ordinal numbers first through ninth are formed...
- are
called ordinal numbers.
Natural numbers are also used as labels, like
jersey numbers on a
sports team,
where they
serve as
nominal numbers and do not...
-
written languages, an
ordinal indicator is a character, or
group of characters,
following a
numeral denoting that it is an
ordinal number,
rather than a...
-
mathematical or
computer science context.
Ordinal numbers predate the
invention of zero and
positional notation.
Ordinal numbers such as 21st, 33rd, etc., are formed...
-
which are
cardinal numbers used to
quantify the size of
infinite sets, and the
transfinite ordinals,
which are
ordinal numbers used to
provide an ordering...
- the
mathematical field of set theory,
ordinal arithmetic describes the
three usual operations on
ordinal numbers: addition, multiplication, and exponentiation...
- In
proof theory,
ordinal analysis ****igns
ordinals (often
large countable ordinals) to
mathematical theories as a
measure of
their strength. If theories...
-
superreal numbers (including the
hyperreal numbers) can be
realized as
subfields of the surreals. The
surreals also
contain all
transfinite ordinal numbers; the...
-
Regnal numbers are
ordinal numbers used to
distinguish among persons with the same name who held the same office. Most importantly, they are used to distinguish...
