## Symbols

Here are somne symbols that I use on occasion and want a place to copy and paste them from.

- ∋ - contains - X ∋ Y
- X contains Y
- ∌ - does not contain - X ∋ Y
- X does not contain Y
- ∄ - does not exist - X ∄
- X does not exist
- ∃ - exists - ∃ X
- X exists
- ⇒ - implies - X implies Y
- X implies Y
- ⋂ - intersection of - X ⋂ Y
- intersection of X and Y
- ∈ - member of - X ∈ Y
- X is a member of Y
- ∉ - not a member of - X ∉ Y
- X is not a member of Y
- ⊄ - not a subset of - X ⊄ Y
- X is not a subset of Y
- ⊅ - not a superset of - X ⊅ Y
- X is not a superset of Y
- ⊂ - proper subset of - X ⊂ Y
- X is a proper subset of Y
- ⊃ - proper superset of - X ⊃ Y
- X is a proper superset of Y
- ∝ - proportional to - X is ∝ Y
- X is proportional to Y
- ⊆ - subset of or equal to - X ⊆ Y
- X is a subset of or equal to Y
- ∑ - summation - ∑ (A, B, C)
- summation of A, B, C
- ⊇ - superset of or equal to - X ⊇ Y
- X is a superset of or equal to Y
- ⋃ - union of - X ⋃ Y
- union of X and Y