=

See also: Appendix:Variations of "=", 二, and ⸗

= U+003D, &#61; EQUALS SIGN ← < [U+003C] Basic Latin > → [U+003E]

Character variations

⁼ U+207C, ⁼ SUPERSCRIPT EQUALS SIGN ← ⁻ [U+207B] Superscripts and Subscripts ⁽ → [U+207D]

₌ U+208C, ₌ SUBSCRIPT EQUALS SIGN ← ₋ [U+208B] Superscripts and Subscripts ₍ → [U+208D]

﹦ U+FE66, ﹦ SMALL EQUALS SIGN [unassigned: U+FE67] ← ﹥ [U+FE65] Small Form Variants ﹨ → [U+FE68]

＝ U+FF1D, ＝ FULLWIDTH EQUALS SIGN ← ＜ [U+FF1C] Halfwidth and Fullwidth Forms ＞ → [U+FF1E]

Text style	Emoji style
🟰︎	🟰️
Text style is forced with ⟨︎⟩ and emoji style with ⟨️⟩.
🟰 U+1F7F0, 🟰 HEAVY EQUALS SIGN [unassigned: U+1F7EC–U+1F7EF] [unassigned: U+1F7F1–U+1F7FF] ← 🟫 [U+1F7EB] Geometric Shapes Extended 🠀 → [U+1F800]

Translingual

Description

Two parallel horizontal lines.

Glyph origin

In the modern sense as the equal sign, first attested in The Whetstone of Witte (1557) by Welsh mathematician Robert Recorde, in which the two parallel lines expressed equality, as Recorde wrote, "bicauſe noe .2. thynges, can be moare equalle" ("because no two things can be more equal").

Symbol

=

1. (mathematics) The equal sign. It asserts that two quantities or expressions have the same value.

   2+2=4

   1. (mathematics, computing theory, abuse of notation, with big O notation) Is. Used to state the relation that the growth rate of the expression on the left side of the sign is bounded or limited by that of the expression on the right.

      Synonyms: ∈, ⊂, ⊆ (depending on context)

      The statement $f(x)=O(log^{2}x)$ means that as $x$ gets arbitrarily large, $f(x)$ will never grow faster than some constant multiple of $log^{2}x$.

2. (chemistry) A double bond; a chemical bond between two chemical elements involving four bonding electrons instead of the usual two.
3. (programming) The assignment operator. It assigns a value to a variable.

   $price=18.95 (this causes $price to be 18.95 from now on)

4. (programming) An operator that compares if two values are equal. In some languages, == is used instead.
5. (lexicography) The same form as the headword.

   sheep pl. =

6. (lexicography) Indicates synonyms of a word.
7. (linguistics) Indicates a clitic boundary.

Usage notes

When used in big O notation, the = relation is asymmetric i.e. $O(x)=O(x^{2})$ is not equivalent to $O(x^{2})=O(x)$. For a wider discussion on this usage, refer to this English Wikipedia article.

Quotations

For quotations using this term, see Citations:=.

Synonyms

• (assignment): :=, ≔, ←
• (compares if equal): ==, ⩵

Antonyms

• (antonym(s) of “equals”): ≠

Derived terms

• !=
• ≗
• ≘
• ≙
• ≚
• ≛
• ≜
• ≝
• ≞
• ≟
• ≠
• ≡
• ⩰

Conjunction

=

1. (informal) The same as; equal to.

   A wireless keyboard = a keyboard without a wire.

   Vulpes vulpes = red fox.

   • 2022, “2023 Laws of Chess”, in FIDE‎^[1] (in English), page 21:

     For the abbreviation of the name of the pieces, each player is free to use the name which is commonly used in his/her country. Examples: F = fou (French for bishop), L = loper (Dutch for bishop). In printed periodicals, the use of figurines is recommended.

Quotations

• For quotations using this term, see Citations:=.

Antonyms

• (antonym(s) of “equals”): ≠

See also

• -
• ~

Related symbols from U+2242–U+2269

• ≂
• ≃
• ≄
• ≅
• ≆
• ≇
• ≈
• ≉
• ≊
• ≋
• ≌
• ≍
• ≎
• ≏
• ≐
• ≑
• ≒
• ≓
• ≔
• ≕
• ≖
• ≗
• ≘
• ≙
• ≚
• ≛
• ≜
• ≝
• ≞
• ≟
• ≠
• ≡
• ≢
• ≣
• ≤
• ≥
• ≦
• ≧
• ≨
• ≩

Japanese

Particle

=(イコール) • (ikōru) 

1. (informal) alternative form of イコール (ikōru, “equals, is equal to”)

Symbol

= 

1. alternative form of ゠

Latin

Symbol

=

1. Symbol for sextans.

Swedish

Symbol

=

1. (SAB) Specifying a language division of the aforementioned topic.

   Vkc=e ― Tooth pathology in English

   Ihq=kq ― Art in advertisment in American Spanish

Usage notes

• The language code is determined based on the extension letters from Fb to Få under SAB's F (Linguistics). For example, Fe stands for English linguistics, so =e indicates that the language is English.