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I want to ask what this mathematical symbol ≠ stands for?
Signofinequality is a symbol used to indicate the unequal relationship between two quantities. Now commonly used are "≦" (unequal sign) and ">" (greater than sign). "

"=" is an equal sign, "≈" is an approximate symbol (that is, approximately equal to), "≦" is an unequal sign, and ">" is a greater than sign. "

""is a similar symbol, "≒" is a complete equal sign, "∨" is a parallel symbol, "∧" is a vertical symbol, "∧" is a proportional symbol (reciprocal relation can be used to express inverse ratio), "∈" is a symbol and "_".