「無限」(infinity) is a concept that describes something without any limits or boundaries. In mathematics, it often represents a value that is larger than any finite number. For example, when we talk about the set of natural numbers, it goes on forever, illustrating the idea of infinity. In philosophy, 無限 can refer to the endless nature of the universe or the limitless potential of human thought. It raises questions about existence and the nature of reality. The symbol for infinity (∞) is commonly used in various fields, including mathematics, physics, and art, to signify this boundless idea.