The Unicode sign “๐” is represented by the mathematical bold capital letter X, which has the code point U+1D54F. It belongs to the Mathematical Alphanumeric Symbols block.

The Mathematical Alphanumeric Symbols block was introduced in Unicode version 3.1 and contains characters that are used primarily for mathematical notation, allowing mathematicians and scientists to represent equations and formulas in a visually distinct and aesthetically pleasing way.

The bold capital letter “๐” (U+1D54F) serves as a stylistic variation of the regular capital letter “X” (X), and its purpose is to make certain mathematical expressions or equations stand out and be more easily recognizable when presented in a printed or digital format. For instance, in a complex equation or formula, the bold “๐” may be used to represent a particular variable or mathematical set with enhanced emphasis.

Unicode’s continuous effort to include a wide range of characters, including mathematical symbols, is aimed at facilitating the representation of diverse languages and notations across the digital landscape. This ensures that mathematicians, scientists, and other users have the necessary tools to accurately and appropriately express complex mathematical concepts and formulas in various documents and platforms.

[1]https://github.com/EmojiTwo/emojitwo[2]https://github.com/hfg-gmuend/openmoji

[3]https://github.com/twitter/twemoji

[4]https://github.com/googlefonts/noto-emoji

[5]https://github.com/microsoft/fluentui-emoji

[6]https://github.com/sensadesign/sensaemoji