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Reversing an integer's digits is multiplicative for small digits

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#elementary-number-theory #polynomials #recreational-mathematics #number-systems #multiplicative-function
572
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Verifying $\mathbb T$ a subgroup of the multiplicative group of non-zero complex numbers

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#abstract-algebra #complex-numbers #multiplicative-function
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Dirichlet Convolution of the Mobius Function with Itself

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#totient-function #arithmetic-functions #mobius-function #multiplicative-function #dirichlet-convolution
511
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Showing a nonzero multiplicative arithmetic function satisfies $f(1) = 1$

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#number-theory #arithmetic-functions #multiplicative-function
62
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Number Theory problem

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#number-theory #multiplicative-function
50
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Solve de equation: σ(∅(n))=2^n

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#totient-function #arithmetic-functions #multiplicative-function
105
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Examples of quasi-logarithmic functions on natural numbers.

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#elementary-number-theory #multiplicative-function
45
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Multiplicative complex function has mean value

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#complex-analysis #roots-of-unity #multiplicative-function
110
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On a conjecture involving multiplicative functions and the integers $1836$ and $136$

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#elementary-number-theory #divisibility #totient-function #divisor-sum #multiplicative-function
141
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On a conjecture involving multiplicative functions and the integers $1836$ and $137$

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#elementary-number-theory #divisibility #totient-function #divisor-sum #multiplicative-function
87
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When is the norm of a ring $\Bbb Z[\sqrt{-p}]$ multiplicative?

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#ring-theory #algebraic-number-theory #diophantine-equations #multiplicative-function
86
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Sum of multiplicative functions

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#elementary-number-theory #multiplicative-function
101
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Euler's Totient Function - Multiplicativity via Group of Units

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#totient-function #multiplicative-function
77
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Prove that there are infinitely many natural number such that $σ(n)>100n$

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#elementary-number-theory #divisor-sum #multiplicative-function
29
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Linearization of Multiplicative model

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#logarithms #linearization #multiplicative-function

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