What is an undivided half?

An undivided half refers to a single, whole unit that is divided into two equal parts, where each part is considered as one of those halves. In mathematical terms, it represents 1/2 of something, but the term "undivided" emphasizes that it is treated as a complete entity or concept without further division. Essentially, it's the concept of a half that is recognized as a singular portion of a whole.