• In algebra, the dual numbers are a hypercomplex number system first introduced in the 19th century. They are expressions of the form a + bε, where a and...
    19 KB (2,780 words) - 10:15, 17 April 2025
  • Dual (abbreviated DU) is a grammatical number that some languages use in addition to singular and plural. When a noun or pronoun appears in dual form,...
    65 KB (6,009 words) - 00:52, 24 January 2025
  • present number categories of singular or plural. Some languages also have a dual, trial and paucal number or other arrangements. The word "number" is also...
    249 KB (23,430 words) - 19:51, 22 May 2025
  • {\displaystyle D} are real numbers; ε {\displaystyle \varepsilon } is a dual number that squares to zero; and i {\displaystyle i} , j {\displaystyle j} ...
    10 KB (1,473 words) - 20:27, 19 January 2025
  • Thumbnail for Dual quaternion
    mechanics, the dual quaternions are applied as a number system to represent rigid transformations in three dimensions. Since the space of dual quaternions...
    31 KB (4,786 words) - 15:08, 11 March 2025
  • mathematical duality see more cases in Category:Duality theories Dual number, a number system used in automatic differentiation Dual (grammatical number), a grammatical...
    2 KB (324 words) - 00:59, 20 December 2024
  • Thumbnail for Multiple citizenship
    permit a general dual citizenship while others permit dual citizenship but only of a limited number of countries. A country that allows dual citizenship may...
    154 KB (18,681 words) - 16:27, 21 May 2025
  • vector space. The special case of a 1-dimensional algebra is known as a dual number. Grassmann numbers saw an early use in physics to express a path integral...
    22 KB (3,868 words) - 01:50, 10 April 2025
  • broken apart was illegitimate. (See Mathematical fallacy.) −1 Dual number Split-complex number j is usually used in engineering contexts where i has other...
    12 KB (1,347 words) - 02:23, 8 May 2025
  • "XIX" are dual-numbered "XVI" through "XX" because some sources had already used the altered numbering sequence. John XXI is also dual-numbered XX in older...
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  • Thumbnail for Gothic language
    languages, which retained dual numbering only in some pronoun forms, Gothic has dual forms both in pronouns and in verbs. Dual verb forms exist only in...
    94 KB (10,392 words) - 10:16, 23 May 2025
  • agreement with the number of their associated nouns. Some languages also have a dual (denoting exactly two of something) or other systems of number categories...
    15 KB (1,998 words) - 03:17, 21 May 2025
  • phrases such as tymi czasy (these days). The ending -oma, derived from the dual number, was applied to the stems of masculine nouns in the 16th–17th century...
    32 KB (4,431 words) - 15:51, 25 January 2025
  • dual numbers, z {\displaystyle z} lies on the dual number projective line, and a d − b c {\displaystyle ad-bc} is not a zero divisor. A dual number is...
    22 KB (3,431 words) - 06:49, 17 October 2024
  • involution operation: if the dual of A is B, then the dual of B is A. In other cases the dual of the dual – the double dual or bidual – is not necessarily...
    53 KB (6,694 words) - 15:44, 28 January 2025
  • had much more complex grammatical conjugation, grammatical genders, dual number and inflections for eight or nine cases in its nouns, pronouns, adjectives...
    9 KB (1,088 words) - 20:52, 26 April 2025
  • any vector space V {\displaystyle V} has a corresponding dual vector space (or just dual space for short) consisting of all linear forms on V , {\displaystyle...
    45 KB (6,865 words) - 10:32, 17 March 2025
  • 2 (redirect from Number 2)
    of a duality, it has religious and spiritual significance in many cultures. The number 2 is the second natural number after 1. Each natural number, including...
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  • Look up duality in Wiktionary, the free dictionary. Duality may refer to: Duality (mathematics), a mathematical concept Dual (category theory), a formalization...
    3 KB (387 words) - 04:41, 14 March 2024
  • instrumental = dative) Old Latvian also had a dual number. Nowadays perhaps in some dialects the dual might be used only in some words representing body...
    41 KB (3,621 words) - 19:40, 17 February 2025
  • There is also a dual number, which is used in certain dialects, such as Samogitian. Some words in the standard language retain their dual forms (for example...
    105 KB (6,175 words) - 20:55, 9 November 2024
  • Thumbnail for Dual polyhedron
    In geometry, every polyhedron is associated with a second dual structure, where the vertices of one correspond to the faces of the other, and the edges...
    18 KB (2,272 words) - 22:22, 14 March 2025
  • Tate duality or Poitou–Tate duality is a duality theorem for Galois cohomology groups of modules over the Galois group of an algebraic number field or...
    6 KB (1,003 words) - 20:06, 12 September 2024
  • then z is a dual number. This approach to non-Euclidean geometry explains the non-Euclidean angles: the parameters of slope in the dual number plane and...
    45 KB (6,066 words) - 03:48, 14 May 2025
  • Dual_EC_DRBG (Dual Elliptic Curve Deterministic Random Bit Generator) is an algorithm that was presented as a cryptographically secure pseudorandom number...
    67 KB (6,730 words) - 18:56, 3 April 2025
  • method of analytic number theory Wave–particle duality Duality (mathematics) Duality (disambiguation) Dual (disambiguation) List of dualities This disambiguation...
    567 bytes (87 words) - 19:24, 25 April 2018
  • Thumbnail for Arabic grammar
    voice, except in a few relict varieties; restriction in the use of the dual number and (for most varieties) the loss of the feminine plural. Many Arabic...
    80 KB (6,808 words) - 08:35, 20 May 2025
  • Thumbnail for Varieties of Arabic
    voice, except in a few relic varieties; restriction in the use of the dual number and (for most varieties) the loss of the distinctive conjugation and...
    102 KB (10,278 words) - 21:13, 21 May 2025
  • Thumbnail for Dual role
    A dual role (also known as a double role) refers to one actor playing two roles in a single production. Dual roles (or a larger number of roles for an...
    8 KB (905 words) - 10:41, 14 March 2025
  • Thumbnail for Classical Armenian
    derives from the number "two", երկու (erku) and was originally used as a mark for the dual number. There are no dual prefixes or dual plurals in Old Armenian...
    18 KB (972 words) - 07:38, 14 May 2025