u23D4

U23D4 is a Unicode character that represents the mathematical symbol for the integral sign. The integral sign is used in calculus to denote the process of integration, which is the reverse operation of differentiation. It is typically used to represent the sum of an infinite number of infinitesimally small quantities, and is a fundamental concept in the study of calculus and mathematical analysis.

The Unicode character U23D4 is part of the Mathematical Operators block, which includes a variety of symbols used in mathematical notation. The integral sign is represented by the character code U+23D4 in Unicode, and is encoded in UTF-8 as E2 8F 94. The symbol is rendered as a stylized "S" or "∫" in most fonts, and is used to indicate the integration of a function with respect to a variable.

The integral sign has a long history in mathematics, dating back to the 17th century when it was first introduced by Sir Isaac Newton and Gottfried Wilhelm Leibniz. Since then, it has become a standard symbol in mathematical notation and is widely used in fields such as physics, engineering, and computer science. The integral sign is also used in a variety of other mathematical contexts, such as in the definition of the definite integral and in the statement of the Fundamental Theorem of Calculus.