Because the symbol consists of two parallel black dots and a vertical black dot, it can be regarded as an inverted triangle.
The classification of mathematical symbols includes operation symbols, comparison symbols, geometric symbols, algebraic symbols, common fractions, integrals and other symbols. Including ﹢× ﹣/= ∽≒≒￠≦ = ≤≥ < > ≮≯∷∶∫∮∝∞∧∨∑∏∪∩∈∵∴⊥∥∠⌒。
Relational symbols of mathematical symbols:
For example, "=" is an equal sign, "≈" is an approximate sign, "≦" is an unequal sign and ">" is a greater than sign. "
"∨" is a coordinate symbol, "⊥" is a vertical symbol, "∧" is a proportional symbol (reciprocal relation can be used to express inverse proportion), "∈" is a symbol, "?" Contained in the symbol "?" Does the symbol "|" in mean "divisible" (for example, a|b? It means "A is divisible by B", while ||b means that R is the greatest power of A divisible by B), and any letter such as X and Y can represent an unknown number.