Mathematical Fraktur Small K 𝔨

Visual Description: The character appears as a compact, ornate K rendered in blackletter style. It has sharp angles, a tall stem, and a curling tail that gives it a historic flair. In print and on screens, it looks like a distinctive, decorative variable used in formulas. It appears in many math fonts and is easy to confuse with other symbols.

Meaning & Usage: The Fraktur K is used as a variable name or to denote a special set or space in math notation. It often marks a kernel, a subspace, or a distinguished object when context is clear. In print and software, it signals emphasis and distinction.

Historical Background: In mathematical texts, Fraktur and other ornate typefaces were used to separate ideas and variables. The Fraktur K appears as a stylistic choice to distinguish letters with special meaning. Over time, readers learned to recognize these marks as symbolic, guiding reading without changing values.

Practical Use: In notes and documents, you may type this symbol to label variables, sets, or kernels. On calculators and math editors, a quick UI control can insert a Fraktur letter or switch font styles for readability. It helps comparisons and formulas stay visually clear.

See our category page for related symbols.

Look‑alikes: k (U+6B).

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