Definition: In mathematics, a "sifter" is typically used to categorize or sort objects based on their size, shape, density, etc. The process of sifting involves removing or transferring small items from a larger container or collection until only one type of item remains. For example, if you have a container filled with oranges and apples, and you need to separate them into different categories such as "large" (orange), "medium" (apple), and "small" (banana), you could