Unequal

Unequal(x, y)

x != y

yields False if x and y are known to be equal, or True if x and y are known to be unequal.

lhs != rhs

represents the inequality lhs <> rhs.

See

• Wikipedia - Computer algebra - Equality

Examples

>> 1 != 1
False

Lists are compared based on their elements:

>> {1} != {2}
True

>> {1, 2} != {1, 2}
False

>> {a} != {a}
False

>> "a" != "b"
True

>> "a" != "a"
False

>> Pi != N(Pi)
False

>> a_ != b_
a_ != b_

>> a != a != a
False

>> "abc" != "def" != "abc"
False

>> a != a != b
False

>> a != b != a
a != b != a

>> {Unequal(), Unequal(x), Unequal(1)}
{True, True, True}

Related terms

Equal, SameQ , UnsameQ

Implementation status

• ✅ - full supported

Github

• Implementation of Unequal