05 // Unicode, Symbol & Encoding WorkbenchSYMBOL-GRID
Calculus Integrals, Vector Del & Differential Notation (∫, ∬, ∭, ∮, ∂, ∇)
Multivariable calculus and mathematical physics notation relies on U+222B–U+2233 integral operators (∫, ∬, ∭, ∮, ∯), partial derivative ∂ (U+2202), and vector differential nabla ∇ (U+2207).
Calculus Integrals, Vector Del & Differential Notation (∫, ∬, ∭, ∮, ∂, ∇) (25)
Selected Symbol
∫
Integral
IntegralsCHARACTER
∫
UNICODE
U+222B
HTML ENTITY
∫
CSS ESCAPE
\222B
UTF-8 HEX
E2 88 AB
JS / TS
\u{222B}
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Reference Table
- 01Click any symbol tile to copy the raw character, or use the quick-copy buttons for U+XXXX code points, HTML entities, CSS escapes, or UTF-8 hex byte sequences.
- 02All UTF-8 byte sequences are computed directly from the canonical Unicode scalar value in accordance with RFC 3629.
- 03CSS hex escapes (e.g. \2211) can be pasted directly inside CSS `content` properties; follow with a trailing space if the next character is hexadecimal.
Frequently Asked Questions
How do I type or embed Calculus & Vector in HTML and React/JSX?+
You can paste the UTF-8 character directly into UTF-8 encoded `.tsx`/`.html` files, use the HTML entity in markup, or use `\u{XXXX}` in JavaScript strings.
Why do some Unicode symbols occupy 3 or 4 bytes in UTF-8?+
ASCII (U+0000..U+007F) uses 1 byte, U+0080..U+07FF uses 2 bytes, Basic Multilingual Plane symbols U+0800..U+FFFF use 3 bytes, and supplementary plane symbols above U+10000 use 4 bytes.
Do all fonts render every technical Unicode glyph?+
Modern system UI stacks (Apple Symbols, Segoe UI Symbol, Noto Sans Math, JetBrains Mono) cover nearly all BMP math and technical glyphs; test weight and size live inside the workbench above.