What 𝓆 means
It is a calligraphic q whose role comes from the formula.
Script style lets an author distinguish this symbol from ordinary q or another styled letter. The flourish identifies which mathematical symbol is being used; it does not tell you which quantity the writer assigned to it.
How do I enter 𝓆 in HTML?
Use the hexadecimal character reference 𝓆.
In HTML text, a browser turns that reference into this character. It can help when the editor does not offer the character directly.
Why does 𝓆 look different across fonts?
Math fonts draw script letters in more than one style.
Unicode Standard 18.0's chart uses roundhand, while Cambria Math and STIX Two Math default to chancery. This lowercase q has no selector for choosing between those styles, so its strokes follow the math font. For decorative text, style ordinary q with a font instead; Unicode reserves mathematical alphanumeric characters for math or technical notation.
Don't confuse it with
4Questions people ask
1Why does 𝓆 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 𝓆
𝓆\1D4C6Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.