1. The problem is to explain the concept of "definition" (definíció) in mathematics. 2. A definition in mathematics is a precise explanation of the meaning of a term or concept. 3. Definitions are used to clearly state what a mathematical object or idea is, so everyone understands it the same way. 4. For example, the definition of a prime number is: a natural number greater than 1 that has no positive divisors other than 1 and itself. 5. Definitions are the foundation of mathematical reasoning and proofs because they set the exact criteria for concepts. 6. Remember, definitions are not proven; they are accepted as the starting point for understanding and working with mathematical ideas.