Subset Of With Not Equal To Symbol
⊊ means “is a proper subset of,” indicating inclusion without equality.
U+228A
The symbol ⊊ is read as “subset of with not equal to.” It’s commonly used when one set is contained in another, but cannot be the same set. This page helps you copy the character and use it correctly.
Subset Of With Not Equal To Symbol Meaning
⊊ (unicode U+228A, html entity ⊊) represents a proper subset relationship: A ⊊ B means A is a subset of B, and A is not equal to B. In contrast to the plain subset symbol (⊂), ⊊ emphasizes that the first set is strictly smaller than the second. You’ll often see it in math writing, proofs, and logic where distinguishing “contained” from “identical” matters. It also appears in educational materials and clear symbolic notation for comparing collections, elements, or constraints where strict inclusion is required.
Common uses
- •Indicating a proper subset in set theory and discrete math notes
- •Writing logic statements where one condition set is strictly contained in another
- •Labeling constraints in algorithms or search spaces that are strictly reduced
- •Clarifying differences between two groups, datasets, or collections in documentation
- •Producing consistent mathematical notation in homework, presentations, and worksheets
Examples
⊊ Subset of with Not Equal To
- ⊊Let A ⊊ B, so A ⊂ B but A ≠ B.
- ⊊If S ⊊ T, then every element of S is in T, and S is not equal to T.
- ⊊The feasible set F ⊊ G because G includes additional options.
- ⊊For proper inclusion, use ⊊ instead of ⊂.
- ⊊Show that X ⊊ Y by proving X ⊆ Y and X ≠ Y.
Variations
Ready to copy
Technical codes
| Unicode | U+228A | |
| HTML Entity | ⊊ | |
| HTML Code | ⊊ | |
| CSS | \228A |
FAQ
What does ⊊ mean?
⊊ means “subset of with not equal to,” i.e., a proper subset where the left set is contained in the right set but not identical.
When should I use ⊊ instead of ⊂?
Use ⊊ when you want to emphasize strict inclusion (subset plus not equal). Use ⊂ when equality is not ruled out.
Is ⊊ the same as “subset of”?
Not exactly. ⊊ is a stricter form: it implies subsethood and explicitly indicates the sets are not equal.
How can I copy ⊊ into HTML or code?
You can paste the character directly (⊊) or use the HTML entity ⊊ or the Unicode code point U+228A (CSS escape \\228A, JavaScript escape \\u{228A}).