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𝒳

Mathematical Script Capital X Symbol

𝒳 is the Mathematical Script Capital X character, used in math-notation styling for a scripted capital X.

U+1D4B3

𝒳 is a Unicode character from the Mathematical Script block. It represents a styled capital X (script font) rather than the plain letter X. Use it when you want a formal, typographic math appearance.

Mathematical Script Capital X Symbol Meaning

𝒳 (Unicode U+1D4B3) is β€œMATHEMATICAL SCRIPT CAPITAL X,” a scripted (calligraphic) version of the capital letter X used in mathematical notation and typesetting. In practice, it often distinguishes X from other X-like symbols by style, helping indicate a specific quantity, set, or variable within a document. Because it is a distinct Unicode character, it can render consistently across platforms that support the Mathematical Script block. If you need a plain X, use β€œX” instead; if you need a script-style X, use 𝒳.

Common uses

  • β€’Labeling a variable in equations where script styling is preferred
  • β€’Designing math-themed headers or typographic accents using a scripted X
  • β€’Creating distinguishable symbols for sets, spaces, or operators in documents
  • β€’Using as a logo mark for projects that emphasize math/notation aesthetics
  • β€’Programming text rendering where consistent Unicode math styling matters

Examples

𝒳 Mathematical Script Capital X

  • 𝒳Let 𝒳 be a Banach space.
  • 𝒳Define the mapping f: 𝒳 β†’ 𝒴.
  • 𝒳Consider 𝒳 as the set of admissible states.
  • 𝒳We study convergence in 𝒳 under the given norm.
  • 𝒳Let 𝒳 denote the decision variable.

Variations

Ready to copy

Technical codes

UnicodeU+1D4B3
HTML Entity𝒳
HTML Code𝒳
CSS\1D4B3

FAQ

What does the Mathematical Script Capital X symbol mean?

𝒳 (Unicode U+1D4B3) is β€œMATHEMATICAL SCRIPT CAPITAL X,” a scripted (calligraphic) version of the capital letter X used in mathematical notation and typesetting. In practice, it often distinguishes X from other X-like symbols by style, helping indicate a specific quantity, set, or variable within a document. Because it is a distinct Unicode character, it can render consistently across platforms that support the Mathematical Script block. If you need a plain X, use β€œX” instead; if you need a script-style X, use 𝒳.

What Unicode character is 𝒳?

𝒳 is MATHEMATICAL SCRIPT CAPITAL X with Unicode code point U+1D4B3.

How do I copy 𝒳 into HTML?

Use the HTML entity 𝒳 (as provided).

What are the CSS and JavaScript escapes for 𝒳?

CSS escape: \\1D4B3. JavaScript escape: \\u{1D4B3}.

Is 𝒳 the same as the normal letter X?

No. 𝒳 is a distinct Unicode styled character (script capital X), while plain X is Latin capital letter X.