1
WordNet
adjective
(1) Used of a single unit or thing; not two or more
"`ane' is Scottish"
noun
(2) The smallest whole number or a numeral representing this number
"He has the one but will need a two and three to go with it"
"They had lunch at one"
WiktionaryText
Etymology
Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numerals (compare Devanagari script ), possibly influenced by Roman numeral Ⅰ.
Symbol
- The cardinal number one, a single thing or unit.
- A digit in decimal and every other base numbering system, including binary, octal, and hexadecimal.
- 15 × 134 = 2010
- 0010 00112
- 0x1000E001
- the identity element with respect to multiplication in a ring.
- a×1 = a
- bit state corresponding to binary digit 1, or on or true.
- A Boolean or truth value corresponding to true.
- f : Bk → B : B = {0, 1}