30. Properties of gcd | gcd is unique | gcd(𝑘𝑎,𝑘𝑏)=|𝑘| gcd(𝑎,𝑏) | gcd(𝑎,𝑏)=𝑑⇔gcd(𝑎/𝑑,𝑏/𝑑)=1
Автор: ACADEMY OF MATHEMATICAL SCIENCES
Загружено: 2025-10-31
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Elementary Number Theory by David M. Burton | Problems 2.3
Chapter#2 Divisibility Theory in the Integers
In this lecture I will discuss the following properties of greatest common divisors (GCD).
1. greatest common divisors (GCD) of two integers (not both of them are zero) is unique.
2. For any non-zero integer k, gcd(𝑘𝑎,𝑘𝑏)=|𝑘| gcd(𝑎,𝑏)
3. gcd(𝑎,𝑏)=𝑑⇔gcd(𝑎/𝑑,𝑏/𝑑)=1
4.Bezout’s Lemma
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