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• Number
  ...would not in fact be fundamental). Rather, a fundamental concept such as ''number'' can only be explained by demonstration. Such an approach relies for its e There are [[philosophy|philosophical]] problems bound up with the concept of number. First, there is the [[Ontology|ontological]] problem of the various types
  11 KB (1,701 words) - 20:07, 1 July 2021
• Perfect number
  ...visors of 6 are 1, 2, and 3, and 1+2+3=6. In contrast, 4 is not a perfect number, as the proper divisors of 4 are 1 and 2, and <math> \scriptstyle 1+2 \neq The origin of the term "perfect number" appears to be unknown. Ancient Greeks probably ascribed mystical properti
  4 KB (677 words) - 19:07, 7 November 2008
• Lucas number
  ...ers''' is strongly related to the sequence of [[Fibonacci number]]s. Lucas number and Fibonacci numbers have the identical formula <math>a_n = a_{n-1} + a_{n *If <math>p\ </math> is a prime number, than <math>p\ </math> divides <math>L_p - 1\ </math>. The converse is fals
  798 bytes (117 words) - 04:00, 4 March 2008
• Erdös number
  #REDIRECT [[Erdős number]]
  27 bytes (4 words) - 01:28, 3 April 2011
• Atomic number
  ...ventionally denoted by ''Z'' and is by definition a non-negative [[natural number]]. For instance, the element [[carbon]] is characterized by ''Z'' = 6 and t ...e chemical and physical properties of an atom are solely determined by the number of its electrons and hence by its nuclear charge: the nuclear charge is a u
  7 KB (1,066 words) - 05:40, 6 March 2024
• Transfinite number
  ...is an infinite [[cardinal number|cardinal]] or [[ordinal number|ordinal]] number. (However, often simply '''infinite''' (cardinal or ordinal) '''number''' is used instead.)
  495 bytes (72 words) - 18:31, 20 June 2009
• Number Theory
  #Redirect [[Number theory]]
  27 bytes (3 words) - 07:04, 30 May 2008
• Bell number
  50 bytes (5 words) - 17:22, 13 December 2008
• Perfect Number
  #Redirect [[Perfect number]]
  28 bytes (3 words) - 21:44, 2 April 2008
• Stirling number
  ...bjects into a given number of structures. There are two kinds of Stirling number,depending on the nature of the structure being counted. The Stirling number of the first kind ''S''(''n'',''k'') counts the number of ways ''n'' labelled objects can be arranged into ''k'' cycles: cycles ar
  2 KB (240 words) - 13:34, 7 February 2009
• Imaginary number
  The '''imaginary numbers''' are a part of the [[complex number]]s. Every complex number can be written as
  3 KB (468 words) - 17:28, 1 January 2010
• Grammatical number
  ...only one word. In a verb, the classification of a word form by grammatical number is know as the [[case (grammar)|case]] of the verb. For example, the verb ' ==Subject noun and verb number agreement==
  2 KB (376 words) - 09:16, 3 October 2010
• Number/Approval
  12 bytes (1 word) - 07:59, 20 March 2008
• Number (grammar)
  #REDIRECT [[grammatical number]]
  32 bytes (3 words) - 14:49, 4 January 2008
• Complex number
  ...ot even clear whether such an object exists and can be reasonably called a number; for example, can we sensibly associate with <math>i</math> natural operati ...mplex numbers when solving [[quadratic equation]]s, which can have complex number solutions. This presentation is historically misleading — the quadratic
  18 KB (3,028 words) - 17:12, 25 August 2013
• Triangular number
  A '''triangular number''' represents the number of [[circle|circles]] you can arrange to a [[equilateral triangle]]. The ''triangular number'' is related to many other figurated numbers:
  884 bytes (130 words) - 07:45, 24 January 2009
• Transcendental number
  ...ntly, it is not a root of any polynomial whose coefficients are [[rational number|rational]]. Transcendental numbers are necessarily [[irrational number|irrational]], but there are many irrational numbers that are not transcende
  875 bytes (130 words) - 12:27, 8 May 2008
• Avogadro number
  #REDIRECT [[Avogadro's number]]
  31 bytes (3 words) - 11:18, 24 June 2009
• Prime Number
  #Redirect [[Prime number]]
  26 bytes (3 words) - 16:11, 14 June 2008
• Normal number
  In [[mathematics]], a '''normal number''' is a [[real number]] whose [[decimal expansion]] shows an equal proportion of each of the poss
  210 bytes (29 words) - 17:24, 7 February 2009

Page text matches

• Perfect number/Related Articles
  * [[Deficient number]] * [[Abundant number]]
  255 bytes (24 words) - 21:27, 2 April 2008
• Lucas sequence/Related Articles
  *[[Fibonacci number]] *[[Lucas number]]
  136 bytes (13 words) - 17:46, 17 February 2008
• Natural number/Catalogs/Special properties
  {{r|Prime number}} {{r|Carmichael number||***}}
  395 bytes (45 words) - 07:44, 11 November 2009
• Number/Related Articles
  {{r|Prime number}} {{r|Whole number}}
  258 bytes (33 words) - 02:29, 8 February 2009
• Transfinite number/Definition
  An infinite number, either a cardinal number or an ordinal number.
  103 bytes (14 words) - 18:45, 20 June 2009
• Real number/Related Articles
  *[[Hyperreal number]] *[[Complex number]]
  389 bytes (39 words) - 12:37, 4 January 2009
• Riemann zeta function/Definition
  ...t in [[number theory]] for its connection with the distribution of [[prime number]]s.
  219 bytes (27 words) - 16:59, 13 November 2008
• Genus (topology)/Definition
  ...equal to the number of "[[hole (topology)|holes]]" or "handles"; a [[Betti number]].
  189 bytes (26 words) - 14:02, 8 February 2010
• Imaginary number/Definition
  ...s a negative real number, or (sometimes) more generally a non-real complex number.
  170 bytes (23 words) - 09:38, 1 January 2010
• Euler characteristic/Definition
  ...eometry)|vertices]] minus the number of [[Edge (geometry)|edge]]s plus the number of [[Face (geometry)|faces]]; it is always equal to 2 for [[convex polyhedr
  284 bytes (41 words) - 14:01, 8 February 2010
• Perfect number/Definition
  A positive whole number whose proper divisors sum to the number itself.
  107 bytes (15 words) - 20:58, 28 June 2008
• Vacancy rate/Definition
  ...|vacancies]] expressed as a percentage of the number of vacancies plus the number in [[employment]].
  177 bytes (24 words) - 16:47, 20 August 2010
• Infinite/Definition
  Greater in size (number of elements, length, area, etc.) than any natural number
  117 bytes (16 words) - 00:12, 26 October 2009
• Einsteinium/Definition
  ...ed transuranic elements whose atomic number are higher than 92, the atomic number of uranium.
  211 bytes (30 words) - 12:16, 5 May 2010
• Finite set/Definition
  The number of its elements is a natural number (0,1,2,3,...)
  97 bytes (12 words) - 18:46, 6 July 2009
• Infinite set/Definition
  The number of its elements is larger than any natural number. (See: [[Finite set]].)
  121 bytes (17 words) - 19:09, 6 July 2009
• Fibonacci number/Definition
  ...n which the first number is 0, the second number is 1, and each subsequent number is equal to the sum of the previous two numbers.
  191 bytes (31 words) - 15:05, 3 July 2008
• Complex number/Related Articles
  {{r|Number}} {{r|Real number}}
  276 bytes (34 words) - 10:41, 21 April 2010
• Natural number/Related Articles
  {{r|Number theory}} {{r|Number}}
  291 bytes (36 words) - 08:06, 19 August 2009
• Goldbach's conjecture/Definition
  Unestablished conjecture that every even number except the number 2 is the sum of two primes.
  130 bytes (18 words) - 08:14, 4 September 2009