Mathematical Bold Small Y 𝐲

Visual Description: The symbol is a bold, compact lowercase y. It has a heavier stroke than a regular y and a rounded bowl. The tail curves smoothly, ending in a small hook. In math fonts, it sits on a plain baseline with even width. It reads clearly in formulas and labels on screen.

Meaning & Usage: Bold small y marks a variable or component that stands out from regular text. In many contexts, bold letters indicate vectors or labeled quantities. In equations, it helps readers follow a particular part of a formula. In calculators and math apps, it identifies the target symbol quickly.

Historical Background: The set of mathematical alphanumeric symbols grew with digital fonts and typographic systems. Bold variants were introduced to distinguish vectors and emphasized variables in math texts. As software evolved, these characters became common in fonts and keyboards, helping readers recognize special roles in formulas without changing meaning.

Practical Use: In formulas, place bold y where a variable or vector component is meant. In calculators and UI controls, it can label a result or parameter for quick identification. When comparing values, bold symbols help separate the item from surrounding text. Use consistently with other bold symbols for clarity.

See our category page for related symbols.

Look‑alikes: y (U+79).

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