Congruencias

Congruences in mathematics refer to a relationship between numbers indicating they leave the same remainder when divided by a certain number, called the modulus. For example, saying "a is congruent to b mod n" means that when both a and b are divided by n, they leave identical remainders. This concept helps simplify calculations and analyze patterns in number theory, especially in modular arithmetic. Essentially, congruences group numbers into classes based on their remainders, making it easier to understand and work with their relationships within a given modulus.