U+1D540
CHARACTER
MATHEMATICAL DOUBLE-STRUCK CAPITAL I
Category:
Uppercase Letter (Lu)
Block:
Mathematical Alphanumeric Symbols
Script:
Common
Age:
Unicode 3.1
Plane:
Supplementary Multilingual Plane (SMP)
Quick Facts
| Unicode Name |
MATHEMATICAL DOUBLE-STRUCK CAPITAL I
|
|
|---|---|---|
| Code Point |
U+1D540
|
|
| Decimal Value |
120128
|
|
| General Category | Uppercase Letter (Lu) → | |
| Unicode Block | Mathematical Alphanumeric Symbols → | |
| Script | Common → | |
| Unicode Version | Unicode 3.1 → | |
| Unicode Plane |
Supplementary Multilingual Plane (SMP)
|
Byte Encodings
| UTF-8 4 bytes |
F0 9D 95 80
|
|
|---|---|---|
| UTF-16 Surrogate Pair |
D835 DD40
High:
U+D835 (\uD835)
Low: U+DD40 (\uDD40)
|
|
| UTF-32 4 bytes |
0001D540
|
|
| UTF-16BE / LE Byte Order |
BE:
D8 35 DD 40
LE: 35 D8 40 DD
|
|
| UTF-32BE / LE Byte Order |
BE:
00 01 D5 40
LE: 40 D5 01 00
|
Developer Code Escapes
| HTML Decimal |
𝕀
|
|
|---|---|---|
| HTML Hexadecimal |
𝕀
|
|
| HTML Named Entity |
None
|
|
| CSS Escape |
\01D540
|
|
| JavaScript (ES6) |
\u{1D540}
|
|
| JavaScript (UTF-16) |
\uD835\uDD40
|
|
| JSON Escape |
\uD835\uDD40
|
|
| Python |
\U0001D540
|
|
| PHP |
"\u{1D540}"
|
|
| Java |
"\uD835\uDD40"
|
|
| C / C++ |
"\U0001D540"
|
|
| Rust |
'\u{1d540}'
|
|
| URL Percent-Encoded |
%F0%9D%95%80
|
Normalization & Decomposition
| Combining Class |
0 — Not Reordered (Spacing)
|
|
|---|---|---|
| Decomposition |
<font> 0049
font
|
|
| NFC / NFD Forms | Compatibility decomposition (<font>): NFKD/NFKC normalize to equivalent base characters. |
Bidirectional Properties
| Bidi Class |
L — Left-to-Right
|
|
|---|---|---|
| Bidi Mirrored | No |
Font Specimen & Rendering
Visual rendering of U+1D540 across standard system font stacks. Rendering fidelity depends on installed OS font glyph coverage.
𝕀
Context:
A 𝕀 Z 123
𝕀
Context:
A 𝕀 Z 123
𝕀
Context:
A 𝕀 Z 123
𝕀
Context:
A 𝕀 Z 123