Operators/Operations

∐ amalgamation \amalg
∧ logical and \wedge ∧
∗ asterix \ast
∨ logical or \vee ∨
• bullet \bullet • ¬ logical not \neg ¬
◦ circle \circ
− minus - −
○ circle, big \bigcirc
∓ minus plus \mp
⊘ circled division slash \oslash
± plus minus \pm ±
⊙ circled dot operator \odot
∖ set minus \setminus
⊖ circled minus \ominus
⊓ square cap \sqcap
⊕ circled plus \oplus
⊔ square cup \sqcup
⊗ circled times \otimes
⋆ star operator \star
† dagger \dagger
× times \times ×
‡ double dagger \ddagger
⊲ normal subgroup of \lhd
⋄ diamond operator \diamond
⊲ normal subgroup of \triangleleft
÷ divide \div ÷ ⊳ contains as normal subgroup \rhd
∙ dot operator \cdot ⋅ ⊳ contains as normal subgroup \triangleright
∆ increment, big \bigtrangleup
∪ union \cup ∪
∩ intersection \cap ∩ ⊎ multiset union \uplus
≀ wreath product \wr