Let $m > 0$ be a positive integer and let $a_1,\ldots,a_r$ be integers. Then the sum and the product of the congruences $a_i(m)$, $i=1,\ldots,r$ are defined by
$$\sum_{i=1}^ra_i(m):=\left(\sum_{i=1}^ra_i\right)(m),$$
$$\prod_{i=1}^ra_i(m):=\left(\prod_{i=1}^ra_i\right)(m).$$
For any integer $a$, we set the power of the congruence $a(m)$ by
$$(a(m))^r:=(a^r)(m).$$
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| created: 2019-04-13 08:05:23 | modified: 2019-04-13 08:11:24 | by: bookofproofs | references: [1272], [8152]
[8152] Jones G., Jones M.: “Elementary Number Theory (Undergraduate Series)”, Springer, 1998
[1272] Landau, Edmund: “Vorlesungen über Zahlentheorie, Aus der Elementaren Zahlentheorie”, S. Hirzel, Leipzig, 1927