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  2. Number theory - Wikipedia

    en.wikipedia.org/wiki/Number_theory

    t. e. Number theory (or arithmetic or higher arithmetic in older usage) is a branch of pure mathematics devoted primarily to the study of the integers and arithmetic functions. German mathematician Carl Friedrich Gauss (1777–1855) said, "Mathematics is the queen of the sciences—and number theory is the queen of mathematics." [1]

  3. List of number theory topics - Wikipedia

    en.wikipedia.org/wiki/List_of_number_theory_topics

    Pisot–Vijayaraghavan number. Salem number. Transcendental number. e (mathematical constant) pi, list of topics related to pi. Squaring the circle. Proof that e is irrational. Lindemann–Weierstrass theorem. Hilbert's seventh problem.

  4. Polite number - Wikipedia

    en.wikipedia.org/wiki/Polite_number

    In number theory, a polite number is a positive integer that can be written as the sum of two or more consecutive positive integers. A positive integer which is not polite is called impolite . [ 1 ] [ 2 ] The impolite numbers are exactly the powers of two , and the polite numbers are the natural numbers that are not powers of two.

  5. Number sentence - Wikipedia

    en.wikipedia.org/wiki/Number_sentence

    A valid number sentence that is true: 83 + 19 = 102. A valid number sentence that is false: 1 + 1 = 3. A valid number sentence using a 'less than' symbol: 3 + 6 < 10. A valid number sentence using a 'more than' symbol: 3 + 9 > 11. Some students will use a direct computational approach. They will carry out the addition 26 + 39 = 65, put 65 = 26 ...

  6. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    This is the minimum number of characters needed to encode a 32 bit number into 5 printable characters in a process similar to MIME-64 encoding, since 85 5 is only slightly bigger than 2 32. Such method is 6.7% more efficient than MIME-64 which encodes a 24 bit number into 4 printable characters. 89

  7. List of recreational number theory topics - Wikipedia

    en.wikipedia.org/wiki/List_of_recreational...

    Talk; Contents move to sidebar hide (Top) 1 Number sequences. 2 Digits. 3 Prime and related sequences. ... This is a list of recreational number theory topics ...

  8. List of numbers - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/List_of_numbers

    A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.

  9. Numeral (linguistics) - Wikipedia

    en.wikipedia.org/wiki/Numeral_(linguistics)

    For example, 1–4 may be the fingers, 5 'thumb', 6 'wrist', 7 'elbow', 8 'shoulder', etc., across the body and down the other arm, so that the opposite little finger represents a number between 17 (Torres Islands) to 23 . For numbers beyond this, the torso, legs and toes may be used, or one might count back up the other arm and back down the ...

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