Metamath Proof Explorer


Theorem rprege0

Description: A positive real is a nonnegative real number. (Contributed by Mario Carneiro, 31-Jan-2014)

Ref Expression
Assertion rprege0 A + A 0 A

Proof

Step Hyp Ref Expression
1 rpre A + A
2 rpge0 A + 0 A
3 1 2 jca A + A 0 A