Heesch is a term used in mathematics, specifically in the study of curves and their properties. It refers to a specific type of curve that can be described by a continuous function. The concept is often explored in the context of geometry and topology, where the behavior and characteristics of curves are analyzed. The Heesch number is a related concept that measures how many times a shape can be tiled with a specific pattern without overlapping. This idea is important in fields like computer graphics and mathematical modeling, where understanding the arrangement of shapes can lead to more efficient designs and solutions.