Injectivity is a property of a function where each element of the domain maps to a unique element in the codomain, ensuring that no two distinct inputs produce the same output. This concept is crucial for understanding the behavior of functions, particularly in the context of mathematical structures and their relationships. An injective function preserves the distinctness of elements, making it vital in various applications, including exact sequences and the Snake Lemma.
congrats on reading the definition of Injectivity. now let's actually learn it.