When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Ostrowski numeration - Wikipedia

    en.wikipedia.org/wiki/Ostrowski_numeration

    Every positive integer N can be written uniquely as = = where the integer coefficients 0 ≤ b n ≤ a n and if b n = a n then b n−1 = 0.. If α is the golden ratio, then all the partial quotients a n are equal to 1, the denominators q n are the Fibonacci numbers and we recover Zeckendorf's theorem on the Fibonacci representation of positive integers as a sum of distinct non-consecutive ...

  3. Zeckendorf's theorem - Wikipedia

    en.wikipedia.org/wiki/Zeckendorf's_theorem

    Lemma: The sum of any non-empty set of distinct, non-consecutive Fibonacci numbers whose largest member is F j is strictly less than the next larger Fibonacci number F j + 1 . The lemma can be proven by induction on j .

  4. Fibbinary number - Wikipedia

    en.wikipedia.org/wiki/Fibbinary_number

    The condition of having no two consecutive ones, used in binary to define the fibbinary numbers, is the same condition used in the Zeckendorf representation of any number as a sum of non-consecutive Fibonacci numbers.

  5. List of prime numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_prime_numbers

    This is a list of articles about prime numbers. A prime number (or prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. By Euclid's theorem, there are an infinite number of prime numbers. Subsets of the prime numbers may be generated with various formulas for primes.

  6. List of types of numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_numbers

    Such a number is algebraic and can be expressed as the sum of a rational number and the square root of a rational number. Constructible number: A number representing a length that can be constructed using a compass and straightedge. Constructible numbers form a subfield of the field of algebraic numbers, and include the quadratic surds.

  7. Perfect number - Wikipedia

    en.wikipedia.org/wiki/Perfect_number

    The even perfect numbers are not trapezoidal numbers; that is, they cannot be represented as the difference of two positive non-consecutive triangular numbers. There are only three types of non-trapezoidal numbers: even perfect numbers, powers of two, and the numbers of the form (+) formed as the product of a Fermat prime + with a power of two ...

  8. List of integer sequences - Wikipedia

    en.wikipedia.org/wiki/List_of_integer_sequences

    A number that has the same number of digits as the number of digits in its prime factorization, including exponents but excluding exponents equal to 1. A046758: Extravagant numbers: 4, 6, 8, 9, 12, 18, 20, 22, 24, 26, 28, 30, 33, 34, 36, 38, ... A number that has fewer digits than the number of digits in its prime factorization (including ...

  9. Square-free integer - Wikipedia

    en.wikipedia.org/wiki/Square-free_integer

    Again, for example, if we begin with the number 42, this time as simply a positive integer, we have its binary representation 101010. This decodes to 2 0 · 3 1 · 5 0 · 7 1 · 11 0 · 13 1 = 3 × 7 × 13 = 273. Thus binary encoding of squarefree numbers describes a bijection between the nonnegative integers and the set of positive squarefree ...