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  1. List of all math symbols and meaning - equality, inequality, parentheses, plus, minus, times, division, power, square root, percent, per mille,...

  2. square root. √x is a nonnegative number whose square is x. √4=2. ∑. Summation. sum over … from … to … of, sigma. ∑ k = 1 n x k {\displaystyle \sum _ {k=1}^ {n} {x_ {k}}} is the same as x 1 +x 2 +x 3 +...+x n. ∑ k = 1 5 ( k + 2 ) = 3 + 4 + 5 + 6 + 7 = 25 {\displaystyle \sum _ {k=1}^ {5} { (k+2)}=3+4+5+6+7=25}

    Symbol
    Name
    Read As
    Meaning
    =
    Equal
    is equal to
    If x=y, x and y represent the same value ...
    Definition
    is defined as
    If x≡y, x is defined as another name of ...
    Approximately equal
    is approximately equal to
    If x≈y, x and y are almost equal.
    Inequation
    does not equal, is not equal to
    If x≠y, x and y do not represent the same ...
  3. The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try! A variable doesn't have to be "x", it could be "y", "w" or any letter, name or symbol.

  4. 4. Mean value: If x is a variable that takes its values in some sequence of numbers S, then ¯ may denote the mean of the elements of S. 5. Negation: Sometimes used to denote negation of the entire expression under the bar, particularly when dealing with Boolean algebra.

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  6. Algebra Symbols. lgebra is a subfield of mathematics pertaining to the manipulation of symbols and their governing rules. The following is a compilation of symbols from the different branches of algebra, which include basic algebra, number theory, linear algebra and abstract algebra.

  7. A comprehensive collection of 200+ symbols used in the various subfields of mathematics, as categorized by their functions, types and subjects.

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