Infinity Symbol ∞ — Copy & Paste the Infinity Sign
The infinity symbol ∞ (U+221E) is one of the most recognizable mathematical and philosophical symbols in the world. Introduced by English mathematician John Wallis in 1655, the lemniscate (from the Latin "lemniscatus" meaning "decorated with ribbons") represents the concept of endlessness — a quantity without bound or limit. Today, ∞ appears in mathematics, physics, philosophy, tattoo art, jewelry, and social media as a symbol of eternity and limitless potential.
Mathematical Meaning of ∞
In mathematics, ∞ represents a concept rather than a specific number. In calculus, limits can approach infinity (lim x→∞). In set theory, Georg Cantor showed that there are different "sizes" of infinity — the infinity of natural numbers (ℵ₀, aleph-null) is smaller than the infinity of real numbers. In complex analysis, the "point at infinity" completes the complex plane into the Riemann sphere.
The symbol ∞ appears in: Limits (lim f(x) as x→∞), Series (∑ from n=1 to ∞), Integrals (∫ from -∞ to ∞), Set theory (|ℝ| = ∞), and Physics (infinite series in quantum mechanics).
Cultural and Symbolic Meanings
Beyond mathematics, ∞ carries deep symbolic meaning. In relationships, "∞ love" or "love you to infinity" expresses eternal, boundless affection. The infinity symbol is one of the most popular tattoo designs, often representing eternal love, endless possibilities, or the infinite nature of the universe. In jewelry, infinity bracelets and necklaces are popular gifts symbolizing everlasting bonds.
In social media, ∞ appears in bios to express "limitless potential" or "infinite creativity." The combination ∞ ˚ · ∞ creates an aesthetic decoration. In motivational content, "∞ possibilities" or "the possibilities are ∞" are common phrases.
How to Type the Infinity Symbol
On Windows: Press Alt+236 (numeric keypad) or type 221E then Alt+X in Word. On Mac: Press Option+5. On iPhone/Android: The ∞ symbol is available in the symbols keyboard (often under the math symbols section). In HTML: Use ∞ or ∞ or ∞. In LaTeX: Use infty.
Frequently Asked Questions
What does the infinity symbol ∞ mean in texting?
In texting, ∞ usually means "forever," "endlessly," or "infinite love." "I'll love you ∞" means "I'll love you forever." It can also mean "unlimited" or "no limits" in contexts like "∞ possibilities" or "∞ energy."
Is the infinity symbol the same as the lemniscate?
Yes. The infinity symbol ∞ is also called a lemniscate — a figure-eight curve. In mathematics, a lemniscate is a specific type of curve, but in common usage, "lemniscate" and "infinity symbol" are used interchangeably to refer to the ∞ shape.
Related Symbol Collections
See also: Math Symbols for full mathematical notation, Heart Symbols for ♥ love symbols, Aesthetic Symbols for bio decoration, and Zodiac Symbols for spiritual symbols.