Axiom ax-pre-ltirr 7886

Description: Real number less-than is irreflexive. Axiom for real and complex numbers, justified by Theorem ax-pre-ltirr 7886. (Contributed by Jim Kingdon, 12-Jan-2020.)

Assertion

Ref	Expression
ax-pre-ltirr	|- ( A e. RR -> -. A <RR A )

Detailed syntax breakdown of Axiom ax-pre-ltirr

Step	Hyp	Ref	Expression
1		cA	. . 3 class A
2		cr 7773	. . 3 class RR
3	1, 2	wcel 2141	. 2 wff A e. RR
4		cltrr 7778	. . . 4 class <RR
5	1, 1, 4	wbr 3989	. . 3 wff A <RR A
6	5	wn 3	. 2 wff -. A <RR A
7	3, 6	wi 4	1 wff ( A e. RR -> -. A <RR A )

This axiom is referenced by:  axltirr  7986