There are two kinds of numbers; ordinal and cardinal. Ordinal numbers denote rank or position in a system, while cardinal numbers tally how many units of something there are. You can think of ordinals ...

(1) For the protocol that adds NFTs to Bitcoin, see Bitcoin Ordinals. (2) A number that identifies the sequence of an item; for example, "record #34 is invalid." Contrast with "cardinal number," which ...

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