Math Symbols

| Basic math symbols Symbol | Symbol Name | Meaning / definition | Example | = | equals sign | equality | 5 = 2+3 | ≠ | not equal sign | inequality | 5 ≠ 4 | > | strict inequality | greater than | 5 > 4 | < | strict inequality | less than | 4 < 5 | ≥ | inequality | greater than or equal to | 5 ≥ 4 | ≤ | inequality | less than or equal to | 4 ≤ 5 | ( ) | parentheses | calculate expression inside first | 2 × (3+5) = 16 | [ ] | brackets | calculate expression inside first | [(1+2)*(1+5)] = 18 | + | plus sign | addition | 1 + 1 = 2 | − | minus sign | subtraction | 2 − 1 = 1 | ± | plus - minus | both plus and minus operations | 3 ± 5 = 8 and -2 | ∓ | minus - plus | both minus and plus operations | 3 ∓ 5 = -2 and 8 | * | asterisk | multiplication | 2 * 3 = 6 | × | times sign | multiplication | 2 × 3 = 6 | ∙ | multiplication dot | multiplication | 2 ∙ 3 = 6 | ÷ | division sign / obelus | division | 6 ÷ 2 = 3 | / | division slash | division | 6 / 2 = 3 | – | horizontal line | division / fraction | | mod | modulo | remainder calculation | 7 mod 2 = 1 | . | period | decimal point, decimal separator | 2.56 = 2+56/100 | a b | power | exponent | 23 = 8 | a^b | caret | exponent | 2 ^ 3 = 8 | √a | square root | √a · √a = a | √9 = ±3 | 3√a | cube root | | 3√8 = 2 | 4√a | forth root | | 4√16 = ±2 | n√a | n-th root (radical) | | for n=3, n√8 = 2 | % | percent | 1% = 1/100 | 10% × 30 = 3 | ‰ | per-mille | 1‰ = 1/1000 = 0.1% | 10‰ × 30 = 0.3 | ppm | per-million | 1ppm = 1/1000000 | 10ppm × 30 = 0.0003 | ppb | per-billion | 1ppb = 1/1000000000 | 10ppb × 30 = 3×10-7 | ppt | per-trillion | 1ppb = 10-12 | 10ppb × 30 = 3×10-10 |
Geometry symbols Symbol | Symbol Name | Meaning / definition | Example | ∠ | angle | formed by two rays | ∠ABC = 30º | ∡ | measured angle | | ∡ABC = 30º | ∢ | spherical angle | | ∢AOB = 30º | ∟ | right angle | = 90º | α = 90º | º | degree | 1 turn = 360º | α = 60º |