Mathematical Sans-Serif Bold Small S 𝘀

Visual Description: The symbol is a bold, small s set in a clean sans-serif style. Its strokes are thick and uniform, with crisp curves. It looks compact on calculators and screens, designed to stay legible at small sizes. The form contrasts with lighter text and supports dense math layouts. In some notations, it stands for A & B in logical expressions.

Meaning & Usage: The character can mark a variable in formulas and serve as a label in UI. It highlights a quantity or result in a calculation. In text, it signals emphasis without shouting. In quick calculators, bold small s helps users spot a value or switch modes. It often appears with operators in simple expressions.

Historical Background: The idea comes from the family of mathematical alphanumeric symbols used to differentiate styles. Designers favored sans-serif forms for readability on screens and in compact layouts. The bold small variant emerged to draw attention to a variable or result, while remaining unobtrusive in dense equations. This approach spread across textbooks, software, and calculators.

Practical Use: In practice, use the symbol to label a parameter in formulas or as the target of a calculation. On calculators and UI controls, it can be a selectable item or a quick toggle for operations or comparisons. Ensure good contrast, consistent sizing, and alignment with other symbols to keep the interface clear.

See our category page for related symbols.

Look‑alikes: s (U+73).

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