Euler Constant Letter
ℇ is the Unicode symbol for the Euler constant, used in math, notation, and decorative typography.
U+2107
ℇ represents the Euler constant in Unicode: U+2107. It’s a stylized character that you can copy directly or insert using its HTML, CSS, or JavaScript escapes. Below are practical ways to use it in text, documents, and UI designs.
Euler Constant Letter Meaning
The symbol ℇ is the Unicode character named “EULER CONSTANT” with code point U+2107 (HTML entity ℇ). It is commonly used in mathematics and scientific writing when referencing the Euler–Mascheroni constant, often denoted by the letter-like symbol ℇ. Because it’s a dedicated Unicode character, it helps keep notation consistent across platforms, typesetting tools, and code. Beyond formal math, designers and writers sometimes use ℇ as a distinctive decorative glyph to label equations, footnotes, or themed UI elements.
Common uses
- •Writing or labeling math expressions that use the Euler–Mascheroni constant
- •Creating consistent scientific notation in documents (papers, slides, reports)
- •Using ℇ as a typographic glyph in equation headers, captions, or callouts
- •Displaying the symbol in developer documentation for formulas and constants
- •Designing UI/branding elements for math-focused apps or learning tools
Examples
ℇ (Euler Constant) Symbol
- ℇThe value of ℇ appears in asymptotic expansions.
- ℇLet γ = ℇ be the Euler constant.
- ℇIn this section, we use ℇ to simplify the expression.
- ℇThe constant ℇ is approximately 0.57721.
- ℇSee the definition of ℇ in the appendix.
Variations
Technical codes
| Unicode | U+2107 | |
| HTML Entity | ℇ | |
| HTML Code | ℇ | |
| CSS | \2107 | |
| Alt Code | Alt + 8455 | |
| Decimal | 8455 |
How to type Euler Constant Letter (ℇ)
On Windows
Hold Alt and type 8455 on the numeric keypad. In Word, type 2107 then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 2107. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 2107, then press Enter or Space.
Anywhere
Copy ℇ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Euler Constant letter mean?
The symbol ℇ is the Unicode character named “EULER CONSTANT” with code point U+2107 (HTML entity ℇ). It is commonly used in mathematics and scientific writing when referencing the Euler–Mascheroni constant, often denoted by the letter-like symbol ℇ. Because it’s a dedicated Unicode character, it helps keep notation consistent across platforms, typesetting tools, and code. Beyond formal math, designers and writers sometimes use ℇ as a distinctive decorative glyph to label equations, footnotes, or themed UI elements.
What is the Unicode code point for ℇ?
ℇ is U+2107, named “EULER CONSTANT”.
How can I copy ℇ in HTML?
Use the HTML entity: ℇ
What is the CSS escape for ℇ?
Use: \\2107
How do I type ℇ in JavaScript?
Use: \\u{2107}