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Here are some important math symbols with their names and descriptions:

1. *+ (Plus sign)*: Represents addition or a positive value.
2. *- (Minus sign)*: Represents subtraction or a negative value.
3. *× (Multiplication sign)*: Represents multiplication.
4. *÷ (Division sign)*: Represents division.
5. *= (Equals sign)*: Indicates equality between two expressions.
6. *≠ (Not equal to)*: Indicates inequality between two expressions.
7. (Greater than)*: Compares two values, indicating one is greater.
8. (Less than)
9. (Greater than or equal to)*: Compares two values, indicating one is greater or equal.
10. (Less than or equal to)*: Compares two values, indicating one is lesser or equal.

Algebraic Symbols

1. *π (Pi)*: Represents the mathematical constant approximately equal to 3.14159.
2. *Σ (Summation)*: Represents the sum of a sequence of numbers.
3. *∏ (Product)*: Represents the product of a sequence of numbers.
4. *^ (Exponentiation)*: Represents raising a number to a power.

Geometric Symbols

1. *∠ (Angle)*: Represents an angle in geometry.
2. *⊥ (Perpendicular)*: Indicates two lines are perpendicular.
3. *∥ (Parallel)*: Indicates two lines are parallel.

Set Theory Symbols

1. *∈ (Element of)*: Indicates membership in a set.
2. *∉ (Not element of)*: Indicates non-membership in a set.
3. *∪ (Union)*: Represents the union of two sets.
4. *∩ (Intersection)*: Represents the intersection of two sets.

Calculus Symbols

1. *dx (Differential)*: Represents an infinitesimal change in x.
2. *∫ (Integral)*: Represents the definite integral of a function.
3. *∂ (Partial derivative)*: Represents the partial derivative of a function.

Other Symbols

1. *√ (Square root)*: Represents the square root of a number.
2. *| | (Absolute value)*: Represents the absolute value of a number.
3. *∞ (Infinity)*: Represents infinity.

These symbols are fundamental to mathematical expressions and equations. Let me know if you have specific questions or need further clarification!