'Square root mod' presentation slideshows

Basic Number Theory

Basic Number Theory. Divisibility Let a,b be integers with a ? 0. if there exists an integer k such that b=ka, we say a divides b which is denoted by a|b 11|143, 1993|3980021 ? if a ?0, then a|0 and a|a; 1|b for each b a|b and b|c ? a|c a|b and a|c ? a|sb+tc for all s, t.

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