𝐱

U+1D431 MATHEMATICAL BOLD SMALL X

Mathematical Alphanumeric Symbols · Lowercase letter

NameMATHEMATICAL BOLD SMALL X
Code pointU+1D431
Decimal119857
BlockMathematical Alphanumeric Symbols
CategoryLowercase letter (Ll)
UTF-8F0 9D 90 B1
UTF-16D835 DC31
UTF-320001D431
HTML𝐱 𝐱
CSS\1D431
JavaScript\uD835\uDC31
Python\U0001d431
URL-encoded%F0%9D%90%B1
Decomposition<font> 0078

Frequently asked questions

What is the character U+1D431?

U+1D431 𝐱 is officially named MATHEMATICAL BOLD SMALL X. It belongs to the Mathematical Alphanumeric Symbols block and the category Lowercase letter.

How do I type 𝐱?

Windows (Word, WordPad): type 1D431, then press Alt+X. Linux (GTK/IBus): Ctrl+Shift+U 1d431, then Space. macOS: enable the “Unicode Hex Input” keyboard, hold Option and type 1D431. Or simply copy it from this page.

How do I write 𝐱 in HTML?

As a numeric character reference &#119857; (decimal) or &#x1D431; (hexadecimal). In UTF-8 documents you can also insert the character directly.

How is 𝐱 encoded in UTF-8?

In UTF-8 the character takes 4 bytes: F0 9D 90 B1. In UTF-16: D835 DC31.

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