𝕀

U+1D540 MATHEMATICAL DOUBLE-STRUCK CAPITAL I

Mathematical Alphanumeric Symbols Β· Uppercase letter

NameMATHEMATICAL DOUBLE-STRUCK CAPITAL I
Code pointU+1D540
Decimal120128
BlockMathematical Alphanumeric Symbols
CategoryUppercase letter (Lu)
UTF-8F0 9D 95 80
UTF-16D835 DD40
UTF-320001D540
HTML𝕀 𝕀
CSS\1D540
JavaScript\uD835\uDD40
Python\U0001d540
URL-encoded%F0%9D%95%80
Decomposition<font> 0049

Frequently asked questions

What is the character U+1D540?

U+1D540 𝕀 is officially named MATHEMATICAL DOUBLE-STRUCK CAPITAL I. It belongs to the Mathematical Alphanumeric Symbols block and the category Uppercase letter.

How do I type 𝕀?

Windows (Word, WordPad): type 1D540, then press Alt+X. Linux (GTK/IBus): Ctrl+Shift+U 1d540, then Space. macOS: enable the β€œUnicode Hex Input” keyboard, hold Option and type 1D540. Or simply copy it from this page.

How do I write 𝕀 in HTML?

As a numeric character reference &#120128; (decimal) or &#x1D540; (hexadecimal). In UTF-8 documents you can also insert the character directly.

How is 𝕀 encoded in UTF-8?

In UTF-8 the character takes 4 bytes: F0 9D 95 80. In UTF-16: D835 DD40.

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