Mathematical Script Small F 𝒻

Visual Description: A slender, cursive F sits on the baseline with a small tail. It looks like a script letter used in math fonts. The shape is lightweight and airy. It shares a calligraphic vibe with other script letters. In print, it stays distinct from bold roman forms. Formulas & UI cues often use it.

Meaning & Usage: The symbol often stands for a function, a variable, or a script style in math. It is common in formulas and is chosen for distinction from other letters. In digital typesetting, the small F helps separate operators from regular text. It can be used in calculators UI as a marker for function mode.

Historical Background: Historically, script fonts emerged to imitate handwriting in math style. Designers adopted such glyphs to add emphasis and distinction. Over time, consistency became important, so a few script forms gained stable usage across textbooks and software. The small F belongs to that evolving family of symbols.

Practical Use: In practice, this F marks a function, a transformation, or a special variable in equations. In calculators and software, it may switch to function mode or denote a named operation. Quick UI controls allow toggling between operations or making simple comparisons with a tap or click.

See our category page for related symbols.

Look‑alikes: f (U+66).

Need styled alternatives? Try the Fancy Text tool.