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Square-free integer - Wikipedia
In mathematics, a square-free integer (or squarefree integer) is an integer which is divisible by no square number other than 1. That is, its prime factorization has exactly one factor for each prime that appears in it. For example, 10 = 2 ⋅ 5 is square-free, but 18 = 2 ⋅ 3 ⋅ 3 is not, because 18 is divisible by 9 = 3 . … See more
The radical of an integer is its largest square-free factor, that is $${\displaystyle \textstyle \prod _{i=1}^{k}q_{i}}$$ with notation of the preceding section. An integer is square-free See more
The absolute value of the Möbius function is the indicator function for the square-free integers – that is, |μ(n)| is equal to 1 if n is square-free, and 0 if it is not. The Dirichlet series of … See more
If we represent a square-free number as the infinite product
$${\displaystyle \prod _{n=0}^{\infty }(p_{n+1})^{a_{n}},a_{n}\in \lbrace 0,1\rbrace ,{\text{ and }}p_{n}{\text{ is the }}n{\text{th prime}},}$$
then we may take … See moreLet us call "t-free" a positive integer that has no t-th power in its divisors. In particular, the 2-free integers are the square-free integers. See more
A positive integer $${\displaystyle n}$$ is square-free if and only if in the prime factorization of $${\displaystyle n}$$, no prime factor occurs with an exponent larger than one. … See more
The central binomial coefficient
$${\displaystyle {2n \choose n}}$$
is never squarefree for n > 4. This was proven in 1985 for all … See moreWikipedia text under CC-BY-SA license Squarefree -- from Wolfram MathWorld
WEBAug 22, 2024 · A number is said to be squarefree (or sometimes quadratfrei; Shanks 1993) if its prime decomposition contains no repeated factors. All primes are therefore trivially squarefree. The number 1 is by …
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WEBMay 26, 1999 · A number is said to be squarefree (or sometimes Quadratfrei; Shanks 1993) if its Prime decomposition contains no repeated factors. All Primes are therefore trivially squarefree. The squarefree …
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