Theorem apirr 8896

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 8286	. 2 |- ( A e. CC -> E. x e. RR E. y e. RR A = ( x + ( _i x. y ) ) )
2		reapirr 8868	. . . . . . . . . 10 |- ( x e. RR -> -. x #ℝ x )
3		apreap 8878	. . . . . . . . . . 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 680	. . . . . . . . 9 |- ( x e. RR -> -. x # x )
6		reapirr 8868	. . . . . . . . . 10 |- ( y e. RR -> -. y #ℝ y )
7		apreap 8878	. . . . . . . . . . 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 680	. . . . . . . . 9 |- ( y e. RR -> -. y # y )
10	5, 9	anim12i 338	. . . . . . . 8 |- ( ( x e. RR /\ y e. RR ) -> ( -. x # x /\ -. y # y ) )
11		ioran 760	. . . . . . . 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 8894	. . . . . . . 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 680	. . . . . 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 4127	. . . . . . 7 |- ( A = ( x + ( _i x. y ) ) -> ( A # A <-> ( x + ( _i x. y ) ) # ( x + ( _i x. y ) ) ) )
19	18	notbid 673	. . . . . 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 2670	. 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 716   = wceq 1398   e. wcel 2205   E.wrex 2523   class class class wbr 4114  (class class class)co 6058   CCcc 8141   RRcr 8142   _ici 8145   + caddc 8146   x. cmul 8148   #_ℝ creap 8865   # cap 8872

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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4233  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664  ax-cnex 8234  ax-resscn 8235  ax-1cn 8236  ax-1re 8237  ax-icn 8238  ax-addcl 8239  ax-addrcl 8240  ax-mulcl 8241  ax-mulrcl 8242  ax-addcom 8243  ax-mulcom 8244  ax-addass 8245  ax-mulass 8246  ax-distr 8247  ax-i2m1 8248  ax-0lt1 8249  ax-1rid 8250  ax-0id 8251  ax-rnegex 8252  ax-precex 8253  ax-cnre 8254  ax-pre-ltirr 8255  ax-pre-lttrn 8257  ax-pre-apti 8258  ax-pre-ltadd 8259  ax-pre-mulgt0 8260

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-br 4115  df-opab 4177  df-id 4419  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-iota 5317  df-fun 5359  df-fv 5365  df-riota 6011  df-ov 6061  df-oprab 6062  df-mpo 6063  df-pnf 8326  df-mnf 8327  df-ltxr 8329  df-sub 8462  df-neg 8463  df-reap 8866  df-ap 8873

This theorem is referenced by:  mulap0r  8906  aptap  8941  eirr  12490  dcapnconst  16973