Mathematical Bold Italic Small Y 𝒚
Visual Description: The symbol is a small letter y rendered in bold italic style. It has a slender stem with a slightly curved tail. The strokes are heavier than a regular font, giving it a strong mathematical feel on formulas and compact icons in calculators.
Meaning & Usage: It marks a variable, a dependent quantity, or a function name in equations. In math text and UI, it signals emphasis for a variable that answers a problem. It can also stand in for a coordinate or a label on graphs when bold italics are preferred for clarity.
Historical Background: Digital math fonts introduced bold italic variants to help distinguish variables from ordinary text. The idea is to reserve distinct styles for math notation rather than rely on plain letters. This approach survives across tools and platforms, remaining useful for clear typography and long formulas.
Practical Use: In formulas and calculators, the symbol can denote a variable to solve for or compare values. Quick UI controls may let users substitute or swap variables, or evaluate expressions with bold italic letters. It helps keep math interfaces legible during quick operations or comparisons.
See our category page for related symbols.
Look‑alikes: y (U+79).
Need styled alternatives? Try the Fancy Text tool.
Confusables
Technical details
- Codepoint:
U+1D49A - General Category:
Ll - Age:
3.1 - Bidi Class:
L - Decomposition:
<font> 0079 - Block:
Mathematical Alphanumeric Symbols - Script:
Common - UTF-8:
F0 9D 92 9A - UTF-16:
D835 DC9A - UTF-32:
0001D49A - HTML dec:
𝒚 - HTML hex:
𝒚 - JS escape:
\u{1D49A} - Python \N{}:
\N{MATHEMATICAL BOLD ITALIC SMALL Y} - Python \U:
\U0001D49A - URL-encoded:
%F0%9D%92%9A - CSS escape:
\1D49A
How to type / insert
Fast copy: click the Copy button near the top of this page.
By codepoint: in many editors and IDEs, you can insert via the Unicode code U+1D49A or a built‑in character picker.
HTML: use the numeric entity 풚 (hex) or 풚 (decimal) when an HTML entity is needed.
Compatibility & troubleshooting
Font support: if the symbol does not render, the current font likely lacks this codepoint. Choose a font with broad Unicode coverage or allow a fallback font.
Web pages: ensure your CSS font stack includes a general fallback; avoid relying on images for common symbols to preserve accessibility and copyability.