Theorem apirr 8748

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 8138	. 2 |- ( A e. CC -> E. x e. RR E. y e. RR A = ( x + ( _i x. y ) ) )
2		reapirr 8720	. . . . . . . . . 10 |- ( x e. RR -> -. x #ℝ x )
3		apreap 8730	. . . . . . . . . . 11 |- ( ( x e. RR /\ x e. RR ) -> ( x # x <-> x #ℝ x ) )
4	3	anidms 397	. . . . . . . . . 10 |- ( x e. RR -> ( x # x <-> x #ℝ x ) )
5	2, 4	mtbird 677	. . . . . . . . 9 |- ( x e. RR -> -. x # x )
6		reapirr 8720	. . . . . . . . . 10 |- ( y e. RR -> -. y #ℝ y )
7		apreap 8730	. . . . . . . . . . 11 |- ( ( y e. RR /\ y e. RR ) -> ( y # y <-> y #ℝ y ) )
8	7	anidms 397	. . . . . . . . . 10 |- ( y e. RR -> ( y # y <-> y #ℝ y ) )
9	6, 8	mtbird 677	. . . . . . . . 9 |- ( y e. RR -> -. y # y )
10	5, 9	anim12i 338	. . . . . . . 8 |- ( ( x e. RR /\ y e. RR ) -> ( -. x # x /\ -. y # y ) )
11		ioran 757	. . . . . . . 8 |- ( -. ( x # x \/ y # y ) <-> ( -. x # x /\ -. y # y ) )
12	10, 11	sylibr 134	. . . . . . 7 |- ( ( x e. RR /\ y e. RR ) -> -. ( x # x \/ y # y ) )
13		apreim 8746	. . . . . . . 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 397	. . . . . . 7 |- ( ( x e. RR /\ y e. RR ) -> ( ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) <-> ( x # x \/ y # y ) ) )
15	12, 14	mtbird 677	. . . . . 6 |- ( ( x e. RR /\ y e. RR ) -> -. ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) )
16	15	ad2antlr 489	. . . . 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 4095	. . . . . . 7 |- ( A = ( x + ( _i x. y ) ) -> ( A # A <-> ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) ) )
19	18	notbid 671	. . . . . 6 |- ( A = ( x + ( _i x. y ) ) -> ( -. A # A <-> -. ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) ) )
20	19	adantl 277	. . . . 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 167	. . . 4 |- ( ( ( A e. CC /\ ( x e. RR /\ y e. RR ) ) /\ A = ( x + ( _i x. y ) ) ) -> -. A # A )
22	21	ex 115	. . 3 |- ( ( A e. CC /\ ( x e. RR /\ y e. RR ) ) -> ( A = ( x + ( _i x. y ) ) -> -. A # A ) )
23	22	rexlimdvva 2656	. 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 104   <-> wb 105   \/ wo 713   = wceq 1395   e. wcel 2200   E.wrex 2509   class class class wbr 4082  (class class class)co 6000   CCcc 7993   RRcr 7994   _ici 7997   + caddc 7998   x. cmul 8000   #_ℝ creap 8717   # cap 8724

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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4201  ax-pow 4257  ax-pr 4292  ax-un 4523  ax-setind 4628  ax-cnex 8086  ax-resscn 8087  ax-1cn 8088  ax-1re 8089  ax-icn 8090  ax-addcl 8091  ax-addrcl 8092  ax-mulcl 8093  ax-mulrcl 8094  ax-addcom 8095  ax-mulcom 8096  ax-addass 8097  ax-mulass 8098  ax-distr 8099  ax-i2m1 8100  ax-0lt1 8101  ax-1rid 8102  ax-0id 8103  ax-rnegex 8104  ax-precex 8105  ax-cnre 8106  ax-pre-ltirr 8107  ax-pre-lttrn 8109  ax-pre-apti 8110  ax-pre-ltadd 8111  ax-pre-mulgt0 8112

This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-nel 2496  df-ral 2513  df-rex 2514  df-reu 2515  df-rab 2517  df-v 2801  df-sbc 3029  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3888  df-br 4083  df-opab 4145  df-id 4383  df-xp 4724  df-rel 4725  df-cnv 4726  df-co 4727  df-dm 4728  df-iota 5277  df-fun 5319  df-fv 5325  df-riota 5953  df-ov 6003  df-oprab 6004  df-mpo 6005  df-pnf 8179  df-mnf 8180  df-ltxr 8182  df-sub 8315  df-neg 8316  df-reap 8718  df-ap 8725

This theorem is referenced by:  mulap0r  8758  aptap  8793  eirr  12285  dcapnconst  16388