Equal

• lhs rhs is used to represent a symbolic equation, to be manipulated using functions like Solve.

• lhs rhs returns True if lhs and rhs are identical expressions.

• lhs rhs returns False if lhs and rhs are determined to be unequal by comparisons between numbers or other raw data, such as strings.

• Approximate numbers are considered equal if they differ in at most their last eight binary digits (roughly their last two decimal digits).

• 2 2. gives True.

• gives True if all the are equal.

• Equal[e] gives True.

• For exact numeric quantities, Equal internally uses numerical approximations to establish inequality. This process can be affected by the setting of the global variable $MaxExtraPrecision.

• In StandardForm and InputForm, lhs rhs can be input as lhs \[Equal] rhs or lhs rhs.

• It can also be input as lhs \[LongEqual] rhs or lhs rhs.

• In TraditionalForm, lhs rhs is output as lhs rhs.

• See Section 1.5.5 and Section 1.5.6.

• See also: SameQ, Unequal, KroneckerDelta, Order, Element.

• New in Version 1; modified in 4.1.