U0000211D
U0000211D is a Unicode character that falls under the category of "Other, Format" in the Unicode Standard. It is represented by the hexadecimal code point U+211D and is commonly known as the "Double-Struck Capital R." This character is used in mathematical notation to denote the real numbers set, often denoted by the symbol ℝ. The Double-Struck Capital R is a stylized version of the Latin capital letter R, with a bold and sans-serif appearance, which helps to distinguish it from other uses of the letter R in mathematical expressions. In Unicode, this character is encoded in the Basic Multilingual Plane (BMP) and is part of the Mathematical Alphanumeric Symbols block. It is widely supported across various platforms and applications that handle Unicode text, including web browsers, word processors, and programming environments. The Double-Struck Capital R is an essential tool for mathematicians, scientists, and engineers who need to write and communicate complex mathematical ideas accurately.