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  • 1(自然数之一)_百度百科
    1,是一个阿拉伯数字。 1是一个自然数,是最小的正整数,是最小的正奇数。 1是一个有理数,是一位数,也是奇数。 1既不是质数也不是合数。 1的n次方(n∈R)都等于1。 1的倒数是它本身。 一个或者几个事物所组成的整体,可以看作是单位“1”。
  • 1 - Wikipedia
    1 (one, unit, unity) is a number, numeral, and glyph It is the first and smallest positive integer of the infinite sequence of natural numbers
  • 1 - 维基百科,自由的百科全书
    在数学中,1为乘法单位元,即任何数字与1相乘皆等于其本身。 按照惯例,1不被视为素数。 在数字电路中,1表示 二进制 中的“开启”状态,是计算技术的基础。 在 哲学 领域,1在诸多传统中象征着终极现实或存在的本源。
  • 1 - 維基百科,自由的百科全書 - zh. wikipedia. org
    1 (一 、 壹)是最小的 正整數,也是繼 0 第二小的 自然數。 阿拉伯數字「1」的形狀由 古蘇美爾 和 巴比倫 符號演變而來。 在數學中,1為乘法單位元,即任何數字與1相乘皆等於其本身。 按照慣例,1不被視為質數。
  • CCTV-1综合频道高清直播_CCTV节目官网_央视网
    CCTV-1综合频道直播页提供CCTV-1综合频道24小时高清直播信号,是网民全天候收看CCTV-1的最佳平台。
  • 1 (number) - New World Encyclopedia
    The glyph used today in the Western world to represent the number 1, a vertical line, often with a serif at the top and sometimes a short horizontal line at the bottom, traces its roots back to the Indians, who wrote 1 as a horizontal line, as is still the case in Chinese script
  • The number one - Britannica
    perfect number, a positive integer that is equal to the sum of its proper divisors The smallest perfect number is 6, which is the sum of 1, 2, and 3 Other perfect numbers are 28, 496, and 8,128 The discovery of such numbers is lost in prehistory
  • 1 (number) | Math Wiki | Fandom
    1 is the Hindu-Arabic numeral for the number one (the unit) It is the smallest positive integer, and smallest natural number 1 is the multiplicative identity, i e any number multiplied by 1 equals itself, for example: a ⋅ 1 = a {\displaystyle a \cdot 1=a} and 1 × a = a {\displaystyle 1\times




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