Вот, например, математические операторы:
Mathematical Operators
Unicode U+2200 – U+22FF (8704-8959)
- ∀ or ∀
- for all (∀ or ∀)
- ∂ or ∂
- partial differential (∂ or ∂)
- ∃ or ∃
- there exists (∃ or ∃)
- ∅ or ∅
- empty set, null set, diameter (∅ or ∅)
- ∇ or ∇
- nabla, backward difference (∇ or ∇)
- ∈ or ∈
- element of, set membership (∈ or ∈)
- ∉ or ∉
- not an element of, denial of set membership (∉ or ∉)
- ∋ or ∋
- contains as member (∋ or ∋)
- ∏ or ∏
- n-ary product, product sign (∏ or ∏)
- ∑ or ∑
- n-ary summation, sum of (∑ or ∑)
- − or −
- minus sign (- is hyphen) (− or −)
- ∗ or ∗
- asterisk operator (∗ or ∗)
- √ or √
- square root, radical sign (√ or √)
- ∝ or ∝
- proportional to (∝ or ∝)
- ∞ or ∞
- infinity (∞ or ∞)
- ∠ or ∠
- angle (∠ or ∠)
- ∧ or ∧
- logical and, wedge (∧ or ∧)
- ∨ or ∨
- logical or, vee (∨ or ∨)
- ∩ or ∩
- intersection, cap (∩ or ∩)
- ∪ or ∪
- union, cup (∪ or ∪)
- ∫ or ∫
- integral (∫ or ∫)
- ∴ or ∴
- therefore (∴ or ∴)
- ∼ or ∼
- tilde operator, varies with, similar to (∼ or ∼)
- ≅ or ≅
- congruent, approximately equal to (≅ or ≅)
- ≈ or ≈
- asymptotic to, almost equal to (≈ or ≈)
The Adobe PostScript name for this character is approxequal - ≠ or ≠
- not equal to (≠ or ≠)
- ≡ or ≡
- equivalence, identical to (≡ or ≡)
- ≤ or ≤
- less than or equal to (≤ or ≤)
- ≥ or ≥
- greater than or equal to (≥ or ≥)
- ⊂ or ⊂
- subset of, proper subset (⊂ or ⊂)
- ⊃ or ⊃
- superset of (⊃ or ⊃)
- ⊄ or ⊄
- not a subset of (⊄ or ⊄)
- ⊆ or ⊆
- subset of or equal to (⊆ or ⊆)
- ⊇ or ⊇
- superset of or equal to (⊇ or ⊇)
- ⊕ or ⊕
- circled plus, direct sum (⊕ or ⊕)
- ⊗ or ⊗
- circled times, vector product (⊗ or ⊗)
- ⊥ or ⊥
- up tack, orthogonal to, perpendicular (⊥ or ⊥)
- ⋅ or ⋅
- dot operator (· is middle dot) (⋅ or ⋅)
