| 
    
     | < | < | less than |  
     | ≤ | ≤ | less than or equal to |  
     | > | > | greater than |  
     | ≥ | ≥ | greater than or equal to |  
     | ≠ | ≠ | not equal |  
     | = | = | equal to |  
     | ≈ | ≈ | approximately equal to |  
     | ≡ | ≡ | identically equal to |  
     | ≅ | ≅ | congruent to |  
     | ∝ | ∝ | proportional |  
     | ∴ | ∴ | therefore |  
     | ∑ | ∑ | summation |  
     | ∏ | ∏ | product |  
     | ′ | ′ | prime or minutes |  
     | ″ | ″ | double prime or seconds |  
     | Δ | Δ | delta |  
     | ∇ | ∇ | del |  
     | ∂ | ∂ | partial |  
     | ∫ | ∫ | integral |  |  | 
    
     | · | · | middle dot |  
     | ⋅ | ⋅ | dot operator |  
     | • | • | bullet |  
     | − | − | minus sign |  
     | × | × | multipllcation sign |  
     | ÷ | ÷ | division sign |  
     | ⁄ | ⁄ | fraction slash, (ordinary / \) |  
     | ± | ± | plus or minus |  
     | ° | ° | degree sign |  
     | ⌊ | ⌊ | floor function |  
     | ⌋ | ⌋ | floor function |  
     | ⌈ | ⌈ | ceiling function |  
     | ⌉ | ⌉ | ceiling function |  
     | ∗ | ∗ | asterisk operator, (ordinary *) |  
     | ⊕ | ⊕ | circled plus |  
     | ⊗ | ⊗ | circled times |  
     | º | º | masculine ordinal |  
     | 〈 | ⟨ | bra |  
     | 〉 | ⟩ | ket |  |