Theorem apirr 8233

Description: Apartness is irreflexive. (Contributed by Jim Kingdon, 16-Feb-2020.)

Assertion

Ref	Expression
apirr	|- ( A e. CC -> -. A # A )

Proof of Theorem apirr

Dummy variables x y are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cnre 7634	. 2 |- ( A e. CC -> E. x e. RR E. y e. RR A = ( x + ( _i x. y ) ) )
2		reapirr 8205	. . . . . . . . . 10 |- ( x e. RR -> -. x #ℝ x )
3		apreap 8215	. . . . . . . . . . 11 |- ( ( x e. RR /\ x e. RR ) -> ( x # x <-> x #ℝ x ) )
4	3	anidms 392	. . . . . . . . . 10 |- ( x e. RR -> ( x # x <-> x #ℝ x ) )
5	2, 4	mtbird 639	. . . . . . . . 9 |- ( x e. RR -> -. x # x )
6		reapirr 8205	. . . . . . . . . 10 |- ( y e. RR -> -. y #ℝ y )
7		apreap 8215	. . . . . . . . . . 11 |- ( ( y e. RR /\ y e. RR ) -> ( y # y <-> y #ℝ y ) )
8	7	anidms 392	. . . . . . . . . 10 |- ( y e. RR -> ( y # y <-> y #ℝ y ) )
9	6, 8	mtbird 639	. . . . . . . . 9 |- ( y e. RR -> -. y # y )
10	5, 9	anim12i 334	. . . . . . . 8 |- ( ( x e. RR /\ y e. RR ) -> ( -. x # x /\ -. y # y ) )
11		ioran 710	. . . . . . . 8 |- ( -. ( x # x \/ y # y ) <-> ( -. x # x /\ -. y # y ) )
12	10, 11	sylibr 133	. . . . . . 7 |- ( ( x e. RR /\ y e. RR ) -> -. ( x # x \/ y # y ) )
13		apreim 8231	. . . . . . . 8 |- ( ( ( x e. RR /\ y e. RR ) /\ ( x e. RR /\ y e. RR ) ) -> ( ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) <-> ( x # x \/ y # y ) ) )
14	13	anidms 392	. . . . . . 7 |- ( ( x e. RR /\ y e. RR ) -> ( ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) <-> ( x # x \/ y # y ) ) )
15	12, 14	mtbird 639	. . . . . 6 |- ( ( x e. RR /\ y e. RR ) -> -. ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) )
16	15	ad2antlr 476	. . . . 5 |- ( ( ( A e. CC /\ ( x e. RR /\ y e. RR ) ) /\ A = ( x + ( _i x. y ) ) ) -> -. ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) )
17		id 19	. . . . . . . 8 |- ( A = ( x + ( _i x. y ) ) -> A = ( x + ( _i x. y ) ) )
18	17, 17	breq12d 3888	. . . . . . 7 |- ( A = ( x + ( _i x. y ) ) -> ( A # A <-> ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) ) )
19	18	notbid 633	. . . . . 6 |- ( A = ( x + ( _i x. y ) ) -> ( -. A # A <-> -. ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) ) )
20	19	adantl 273	. . . . 5 |- ( ( ( A e. CC /\ ( x e. RR /\ y e. RR ) ) /\ A = ( x + ( _i x. y ) ) ) -> ( -. A # A <-> -. ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) ) )
21	16, 20	mpbird 166	. . . 4 |- ( ( ( A e. CC /\ ( x e. RR /\ y e. RR ) ) /\ A = ( x + ( _i x. y ) ) ) -> -. A # A )
22	21	ex 114	. . 3 |- ( ( A e. CC /\ ( x e. RR /\ y e. RR ) ) -> ( A = ( x + ( _i x. y ) ) -> -. A # A ) )
23	22	rexlimdvva 2516	. 2 |- ( A e. CC -> ( E. x e. RR E. y e. RR A = ( x + ( _i x. y ) ) -> -. A # A ) )
24	1, 23	mpd 13	1 |- ( A e. CC -> -. A # A )

Syntax hints:   -. wn 3   -> wi 4   /\ wa 103   <-> wb 104   \/ wo 670   = wceq 1299   e. wcel 1448   E.wrex 2376   class class class wbr 3875  (class class class)co 5706   CCcc 7498   RRcr 7499   _ici 7502   + caddc 7503   x. cmul 7505   #_ℝ creap 8202   # cap 8209

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 584  ax-in2 585  ax-io 671  ax-5 1391  ax-7 1392  ax-gen 1393  ax-ie1 1437  ax-ie2 1438  ax-8 1450  ax-10 1451  ax-11 1452  ax-i12 1453  ax-bndl 1454  ax-4 1455  ax-13 1459  ax-14 1460  ax-17 1474  ax-i9 1478  ax-ial 1482  ax-i5r 1483  ax-ext 2082  ax-sep 3986  ax-pow 4038  ax-pr 4069  ax-un 4293  ax-setind 4390  ax-cnex 7586  ax-resscn 7587  ax-1cn 7588  ax-1re 7589  ax-icn 7590  ax-addcl 7591  ax-addrcl 7592  ax-mulcl 7593  ax-mulrcl 7594  ax-addcom 7595  ax-mulcom 7596  ax-addass 7597  ax-mulass 7598  ax-distr 7599  ax-i2m1 7600  ax-0lt1 7601  ax-1rid 7602  ax-0id 7603  ax-rnegex 7604  ax-precex 7605  ax-cnre 7606  ax-pre-ltirr 7607  ax-pre-lttrn 7609  ax-pre-apti 7610  ax-pre-ltadd 7611  ax-pre-mulgt0 7612

This theorem depends on definitions:  df-bi 116  df-3an 932  df-tru 1302  df-fal 1305  df-nf 1405  df-sb 1704  df-eu 1963  df-mo 1964  df-clab 2087  df-cleq 2093  df-clel 2096  df-nfc 2229  df-ne 2268  df-nel 2363  df-ral 2380  df-rex 2381  df-reu 2382  df-rab 2384  df-v 2643  df-sbc 2863  df-dif 3023  df-un 3025  df-in 3027  df-ss 3034  df-pw 3459  df-sn 3480  df-pr 3481  df-op 3483  df-uni 3684  df-br 3876  df-opab 3930  df-id 4153  df-xp 4483  df-rel 4484  df-cnv 4485  df-co 4486  df-dm 4487  df-iota 5024  df-fun 5061  df-fv 5067  df-riota 5662  df-ov 5709  df-oprab 5710  df-mpo 5711  df-pnf 7674  df-mnf 7675  df-ltxr 7677  df-sub 7806  df-neg 7807  df-reap 8203  df-ap 8210

This theorem is referenced by:  mulap0r  8243  eirr  11280