⊆
Math Operator 131
- Unicode
- U+2286
- Category
- Math
- HTML Entity
- ⊆
- CSS
- \2286
The ⊆ symbol, known as "Subset of or Equal To," is a mathematical operator used primarily in set theory. It indicates that all elements of a specific set are also contained within another set, and that both sets could potentially be identical. Outside of academic textbooks, you'll often spot it in technical documentation, data science notes, or math-heavy programming environments.
How to Type
- Windows
- 2286, then Alt+X (in Word) or Win + . then search
- macOS
- Control+Command+Space then search
- Linux
- Ctrl+Shift+U then 2286
- HTML
- ⊆ or ⊆
In Programming
In math-focused programming languages like Julia, ⊆ can be used as a native operator to evaluate if one collection is a subset of another. It is also widely used in LaTeX (typed as `\subseteq`) for formatting mathematical proofs and academic papers.
Tags
A ⊆ B meaning
HTML ⊆
LaTeX subseteq
U+2286
\subseteq
contained
inclusion
mathematics
non-strict subset
set theory
subseq symbol
subset or equal
subset or equal to
type ⊆ symbol