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- ...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 types11 KB (1,701 words) - 20:07, 1 July 2021
- #REDIRECT [[Atomic number]]27 bytes (3 words) - 17:22, 2 April 2008
- ...[[real number]] and is the [[integer]] between [[1 (number)|1]] and [[-1 (number)|-1]], which signifies a value of nothing. It is also a [[numerical digit]] The number zero was invented twice - once in India and once in Mesoamerica. This inve1 KB (232 words) - 03:30, 6 November 2009
- 143 bytes (19 words) - 11:38, 19 May 2008
- 26 bytes (3 words) - 15:04, 28 December 2007
- '''Number theory''' is a branch of [[pure mathematics]] devoted primarily to the stud ([[diophantine geometry]]). Questions in number theory are often best understood through27 KB (4,383 words) - 08:05, 11 October 2011
- ...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 in the series. In mathemati *If <math>\ F_p\ </math> is a prime number different from 3, then <math>\ p</math> is prime. (The converse is fa5 KB (743 words) - 13:10, 27 July 2008
- ...f the sequence of Perrin numbers is, that if <math>p\ </math> is a [[prime number]], then <math>p\ </math> divides <math>P_p\ </math>. The converse is false,828 bytes (104 words) - 04:32, 19 May 2008
- ...ed by publication of joint papers — as a graph. A researcher's Erdős number is the length of the shortest path, via co-author relationships, connecting More explicitly, your Erdős number is the ''first'' number in the following list which applies to you:2 KB (370 words) - 12:51, 11 February 2013
- ...an '''irrational number''' is any [[real number]] that is not a [[rational number]], i.e. it cannot be expressed as a [[fraction]] ''m'' / ''n'' in ...ble to demonstrate that <math>\scriptstyle\sqrt{2}</math> is an irrational number.4 KB (666 words) - 11:23, 3 October 2009
- ...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 properti4 KB (677 words) - 19:07, 7 November 2008
- ...is a [[complex number]] that is a root of a [[polynomial]] with [[rational number|rational]] coefficients. Real or complex numbers that are not algebraic are called [[transcendental number]]s.7 KB (1,145 words) - 00:49, 20 October 2013
- ...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 fals798 bytes (117 words) - 04:00, 4 March 2008
- #REDIRECT [[Erdős number]]27 bytes (4 words) - 01:28, 3 April 2011
- ...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 u7 KB (1,064 words) - 17:17, 8 January 2011
- #Redirect [[Number theory]]27 bytes (3 words) - 07:04, 30 May 2008
- ...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
- 50 bytes (5 words) - 17:22, 13 December 2008
- #Redirect [[Perfect number]]28 bytes (3 words) - 21:44, 2 April 2008
- ...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 ar2 KB (240 words) - 13:34, 7 February 2009
- ...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
- 12 bytes (1 word) - 07:59, 20 March 2008
- The '''imaginary numbers''' are a part of the [[complex number]]s. Every complex number can be written as3 KB (468 words) - 17:28, 1 January 2010
- #REDIRECT [[grammatical number]]32 bytes (3 words) - 14:49, 4 January 2008
- 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
- ...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 quadratic18 KB (3,028 words) - 17:12, 25 August 2013
- ...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 transcende875 bytes (130 words) - 12:27, 8 May 2008
- #REDIRECT [[Avogadro's number]]31 bytes (3 words) - 11:18, 24 June 2009
- #Redirect [[Perrin number]]27 bytes (3 words) - 10:41, 19 May 2008
- #Redirect [[Prime number]]26 bytes (3 words) - 16:11, 14 June 2008
- In [[mathematics]], a '''normal number''' is a [[real number]] whose [[decimal expansion]] shows an equal proportion of each of the poss210 bytes (29 words) - 17:24, 7 February 2009
- ...full rectangle more than one square wide with 11 squares, so 11 is a prime number.]] A '''prime number''' is a [[integer|whole number]] greater than 1 that can be evenly divided by only two different positive18 KB (2,917 words) - 10:27, 30 August 2014
- #REDIRECT [[Complex number]]28 bytes (3 words) - 15:30, 28 October 2007
- ...always be well ordered, and |''X''| can be defined as the least [[ordinal number|ordinal]] that is the order type of some [[well ordering]] of ''X''; this i11 KB (1,808 words) - 17:50, 26 June 2009
- #Redirect [[Triangular number]]31 bytes (3 words) - 10:43, 19 May 2008
- The '''natural numbers''' are the [[number]]s (0), 1,2,3,etc. used for counting, They are also used to indicate the number of equal parts16 KB (2,562 words) - 00:45, 13 October 2009
- ...s identified with points on an infinitely long gapless straight line. The number zero is one such point; positive numbers are to its right and negative numb ...ly imaginary number, i.e., the [[product (mathematics)|product]] of a real number and <math>i</math> ).19 KB (2,948 words) - 02:30, 3 September 2010
- #REDIRECT [[Random number generator]]37 bytes (4 words) - 23:32, 21 August 2009
- ...tp://books.google.com/books?id=wqg4AAAAMAAJ&printsec=frontcover&dq=intitle:number+intitle:concept+inauthor:levi&lr=&num=30&as_brr=1 online edition]695 bytes (100 words) - 11:35, 19 May 2008
- ...itten as the [[vulgar fraction]] <math>a/b</math>, where ''b'' is not [[0 (number)|zero]]. ...[divisor]]s except 1 (i.e., they are [[coprime]]). Every non-zero rational number has exactly one simplest form of this type with a positive denominator. A f9 KB (1,446 words) - 08:52, 30 May 2009
- ...- a\ </math> for every integer <math>\scriptstyle a\ </math>. A Carmichael number ''c'' also satisfies the [[modular arithmetic|congruence]] <math>\scriptsty *Every Carmichael number is [[square-free integer|square-free]] and has at least three different pri4 KB (576 words) - 12:00, 1 January 2013
- 61 bytes (5 words) - 07:48, 11 November 2009
- 2 bytes (0 words) - 23:27, 9 June 2008
- 2 bytes (0 words) - 00:18, 10 June 2008
- 2 bytes (0 words) - 11:22, 10 June 2008
- 3 bytes (0 words) - 11:29, 10 June 2008
- 91 bytes (9 words) - 16:26, 17 June 2009
- ...System|DNS]] by using an indirect lookup method, using the Enum telephone number as a key to obtain [[NAPTR]] records. The records are stored at a [[Domain ...oach is the Electronic Number Mapping System ENUM (also known as Telephone Number Mapping), developed by the [[IETF]], using existing [[E.164]] telepho15 KB (2,370 words) - 21:09, 30 September 2013
- #REDIRECT [[Mercury (element)/Atomic number]]45 bytes (5 words) - 14:59, 10 May 2010
- 2 bytes (0 words) - 23:45, 9 June 2008

## Page text matches

- * [[Deficient number]] * [[Abundant number]]255 bytes (24 words) - 21:27, 2 April 2008
- *[[Fibonacci number]] *[[Lucas number]]136 bytes (13 words) - 17:46, 17 February 2008
- {{r|Prime number}} {{r|Carmichael number||***}}395 bytes (45 words) - 07:44, 11 November 2009
- {{r|Prime number}} {{r|Whole number}}258 bytes (33 words) - 02:29, 8 February 2009
- An infinite number, either a cardinal number or an ordinal number.103 bytes (14 words) - 18:45, 20 June 2009
- *[[Hyperreal number]] *[[Complex number]]389 bytes (39 words) - 12:37, 4 January 2009
- ...t in [[number theory]] for its connection with the distribution of [[prime number]]s.219 bytes (27 words) - 16:59, 13 November 2008
- ...equal to the number of "[[hole (topology)|holes]]" or "handles"; a [[Betti number]].189 bytes (26 words) - 14:02, 8 February 2010
- ...s a negative real number, or (sometimes) more generally a non-real complex number.170 bytes (23 words) - 09:38, 1 January 2010
- ...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 polyhedr284 bytes (41 words) - 14:01, 8 February 2010
- A positive whole number whose proper divisors sum to the number itself.107 bytes (15 words) - 20:58, 28 June 2008
- ...|vacancies]] expressed as a percentage of the number of vacancies plus the number in [[employment]].177 bytes (24 words) - 16:47, 20 August 2010
- Greater in size (number of elements, length, area, etc.) than any natural number117 bytes (16 words) - 00:12, 26 October 2009
- ...ed transuranic elements whose atomic number are higher than 92, the atomic number of uranium.211 bytes (30 words) - 12:16, 5 May 2010
- The number of its elements is a natural number (0,1,2,3,...)97 bytes (12 words) - 18:46, 6 July 2009
- The number of its elements is larger than any natural number. (See: [[Finite set]].)121 bytes (17 words) - 19:09, 6 July 2009
- ...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
- {{r|Number}} {{r|Real number}}276 bytes (34 words) - 10:41, 21 April 2010
- {{r|Number theory}} {{r|Number}}291 bytes (36 words) - 08:06, 19 August 2009
- 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
- ...tum number labeling atomic shells; usually denoted by the non-zero natural number ''n''.136 bytes (17 words) - 08:10, 18 September 2009
- ...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
- ...limited) in size (length, area, etc., or number of elements) by a natural number129 bytes (19 words) - 23:57, 25 October 2009
- The positive real number that, when multiplied by itself, gives the number 2.114 bytes (15 words) - 19:41, 4 September 2009
- The number of positive integer divisors of a given number.94 bytes (13 words) - 16:56, 6 December 2008
- ...dioactive]], and [[Uranium]] (atomic number 92), and [[Plutonium]] (atomic number 94) are significant in the production of [[nuclear energy]] and [[nuclear w347 bytes (43 words) - 14:36, 15 May 2010
- A stipulated number of votes cast, the number of votes allocated to each member state having been determined by its popul174 bytes (26 words) - 10:18, 1 January 2011
- ...e>*<br /><br />*The number in parenthesis () is the [[uncertainty]]. This number was taken from the [http://physics.nist.gov/PhysRefData/Compositions/index265 bytes (35 words) - 16:15, 17 May 2010
- ...e>*<br /><br />*The number in parenthesis () is the [[uncertainty]]. This number was taken from the [http://physics.nist.gov/PhysRefData/Compositions/index266 bytes (35 words) - 15:47, 17 May 2010
- ...e>*<br /><br />*The number in parenthesis () is the [[uncertainty]]. This number was taken from the [http://physics.nist.gov/PhysRefData/Compositions/index265 bytes (35 words) - 15:52, 17 May 2010
- 266 bytes (35 words) - 15:59, 17 May 2010
- 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
- ...n A to the number of elements in B, and then subtracting from this sum the number of elements in the intersection of A and B.303 bytes (58 words) - 08:52, 4 September 2009
- ...al element]], having the [[chemical symbol]] Ar and [[atomic number]] (the number of [[proton]]s) 18.165 bytes (21 words) - 17:51, 27 April 2011
- ...l element]], having the [[chemical symbol]] Hg, and [[atomic number]] (the number of [[proton]]s) 80.167 bytes (21 words) - 17:09, 1 May 2011
- Auto-populated based on [[Special:WhatLinksHere/Rational number]]. Needs checking by a human. {{r|Algebraic number field}}1 KB (169 words) - 19:54, 11 January 2010
- 266 bytes (35 words) - 16:08, 17 May 2010
- 265 bytes (35 words) - 15:59, 17 May 2010
- 268 bytes (35 words) - 16:30, 19 January 2011
- 267 bytes (35 words) - 16:08, 17 May 2010
- 264 bytes (35 words) - 16:18, 17 May 2010
- 267 bytes (35 words) - 15:52, 17 May 2010
- ...number field, used to encode ramification data for abelian extensions of a number field.167 bytes (25 words) - 15:54, 5 December 2008
- ...element]] having the [[chemical symbol]] At and an [[atomic number]] (the number of [[proton]]s) of 85.170 bytes (23 words) - 19:03, 2 May 2011
- ...t between a fixed number of raters when assigning categorical ratings to a number of items or classifying items.210 bytes (29 words) - 07:50, 4 September 2009
- ...t. An algebraic number must be a root of a [[polynomial]] with [[rational number|rational]] coefficients. Real or complex numbers that are not algebraic are called [[transcendental number]]s.1 KB (179 words) - 14:14, 10 December 2008
- ...e set is an irrational number and any real number is the sum of a rational number and a member of the set.212 bytes (39 words) - 20:45, 4 September 2009
- ...no axioms''' are a set of [[axiom]]s that formally describes the [[natural number]]s (0, 1, 2, 3 ...). ...all natural numbers can be reached by moving finitely often to the "next" number (obtained by adding 1).1 KB (167 words) - 15:43, 1 November 2010
- ...or molecule where the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge.193 bytes (31 words) - 20:32, 3 September 2009
- Auto-populated based on [[Special:WhatLinksHere/Algebraic number field]]. Needs checking by a human. {{r|Algebraic number}}843 bytes (113 words) - 10:49, 11 January 2010