Theorem axltirr 8022

Description: Real number less-than is irreflexive. Axiom for real and complex numbers, derived from set theory. This restates ax-pre-ltirr 7922 with ordering on the extended reals. New proofs should use ltnr 8032 instead for naming consistency. (New usage is discouraged.) (Contributed by Jim Kingdon, 15-Jan-2020.)

Assertion

Ref	Expression
axltirr	|- ( A e. RR -> -. A < A )

Proof of Theorem axltirr

Step	Hyp	Ref	Expression
1		ax-pre-ltirr 7922	. 2 |- ( A e. RR -> -. A <RR A )
2		ltxrlt 8021	. . 3 |- ( ( A e. RR /\ A e. RR ) -> ( A < A <-> A <RR A ) )
3	2	anidms 397	. 2 |- ( A e. RR -> ( A < A <-> A <RR A ) )
4	1, 3	mtbird 673	1 |- ( A e. RR -> -. A < A )

Syntax hints:   -. wn 3   -> wi 4   <-> wb 105   e. wcel 2148   class class class wbr 4003   RRcr 7809   <RR cltrr 7814   < clt 7990

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 614  ax-in2 615  ax-io 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-13 2150  ax-14 2151  ax-ext 2159  ax-sep 4121  ax-pow 4174  ax-pr 4209  ax-un 4433  ax-setind 4536  ax-cnex 7901  ax-resscn 7902  ax-pre-ltirr 7922

This theorem depends on definitions:  df-bi 117  df-3an 980  df-tru 1356  df-fal 1359  df-nf 1461  df-sb 1763  df-eu 2029  df-mo 2030  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-ne 2348  df-nel 2443  df-ral 2460  df-rex 2461  df-rab 2464  df-v 2739  df-dif 3131  df-un 3133  df-in 3135  df-ss 3142  df-pw 3577  df-sn 3598  df-pr 3599  df-op 3601  df-uni 3810  df-br 4004  df-opab 4065  df-xp 4632  df-pnf 7992  df-mnf 7993  df-ltxr 7995

This theorem is referenced by:  ltnr  8032