U+1D465 "𝑥" Mathematical Italic Small X Unicode Character
Unicode Version 17.0
𝑥
U+1D465 "𝑥" Mathematical Italic Small X is a dedicated typographic symbol used in mathematics, science, and technical fields to represent the variable x in an italicized form, distinct from the standard Latin small letter x. It belongs to the Mathematical Alphanumeric Symbols block and is designed for use in plain text to clearly indicate mathematical variables, preventing ambiguity with ordinary letters in mixed contexts. This character is commonly employed in formulas, equations, and computer algebra systems where precise mathematical notation is required, and it is not meant to be substituted with a regular italic x from a standard font.
General Properties
| Code Point | U+1D465 |
| Version Added | 3.1 |
| Name | Mathematical Italic Small X |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "x" U+0078 Latin Small Letter X |
Encodings
| HTML Decimal Encoding | 𝑥 |
| HTML Hex Encoding | 𝑥 |
| UTF-8 Encoding | 0xF0 0x9D 0x91 0xA5 |
| UTF-16 Encoding | 0xD835 0xDC65 |
| UTF-32 Encoding | 0x0001D465 |
| C/C++/Java Escape | \ud835\udc65 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Lowercase | Yes |
| Cased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "x" U+0078 Latin Small Letter X |
| NFKC Simple Casefold | "x" U+0078 Latin Small Letter X |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Math | Yes |
| Other Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Lower |