Theorem asymref2OLD 3426

Description: Two ways of saying a relation is antisymmetric and reflexive.

Assertion

Ref	Expression
asymref2OLD	|- ((R i^i `'R) = (I |` dom R) <-> (A.x e. dom R xRx /\ A.xA.y((xRy /\ yRx) -> x = y)))

Distinct variable group:   x,y,R

Proof of Theorem asymref2OLD

Step	Hyp	Ref	Expression
1		df-ral 1641	. . 3 |- (A.x e. dom RA.y((xRy /\ yRx) <-> x = y) <-> A.x(x e. dom R -> A.y((xRy /\ yRx) <-> x = y)))
2		breq2 2613	. . . . . . . . . . . . 13 |- (y = x -> (xRy <-> xRx))
3		breq1 2612	. . . . . . . . . . . . 13 |- (y = x -> (yRx <-> xRx))
4	2, 3	anbi12d 626	. . . . . . . . . . . 12 |- (y = x -> ((xRy /\ yRx) <-> (xRx /\ xRx)))
5		anidm 432	. . . . . . . . . . . 12 |- ((xRx /\ xRx) <-> xRx)
6	4, 5	syl6bb 534	. . . . . . . . . . 11 |- (y = x -> ((xRy /\ yRx) <-> xRx))
7		equequ2 1131	. . . . . . . . . . 11 |- (y = x -> (x = y <-> x = x))
8	6, 7	bibi12d 627	. . . . . . . . . 10 |- (y = x -> (((xRy /\ yRx) <-> x = y) <-> (xRx <-> x = x)))
9		equid 1122	. . . . . . . . . . 11 |- x = x
10	9	tbt 718	. . . . . . . . . 10 |- (xRx <-> (xRx <-> x = x))
11	8, 10	syl6bbr 536	. . . . . . . . 9 |- (y = x -> (((xRy /\ yRx) <-> x = y) <-> xRx))
12	11	a4v 1267	. . . . . . . 8 |- (A.y((xRy /\ yRx) <-> x = y) -> xRx)
13		bi1 148	. . . . . . . . 9 |- (((xRy /\ yRx) <-> x = y) -> ((xRy /\ yRx) -> x = y))
14	13	19.20i 989	. . . . . . . 8 |- (A.y((xRy /\ yRx) <-> x = y) -> A.y((xRy /\ yRx) -> x = y))
15	12, 14	jca 288	. . . . . . 7 |- (A.y((xRy /\ yRx) <-> x = y) -> (xRx /\ A.y((xRy /\ yRx) -> x = y)))
16		bi3 150	. . . . . . . . . 10 |- (((xRy /\ yRx) -> x = y) -> ((x = y -> (xRy /\ yRx)) -> ((xRy /\ yRx) <-> x = y)))
17		breq2 2613	. . . . . . . . . . . 12 |- (x = y -> (xRx <-> xRy))
18	17	biimpcd 155	. . . . . . . . . . 11 |- (xRx -> (x = y -> xRy))
19		breq1 2612	. . . . . . . . . . . 12 |- (x = y -> (xRx <-> yRx))
20	19	biimpcd 155	. . . . . . . . . . 11 |- (xRx -> (x = y -> yRx))
21	18, 20	jcad 598	. . . . . . . . . 10 |- (xRx -> (x = y -> (xRy /\ yRx)))
22	16, 21	syl5com 52	. . . . . . . . 9 |- (xRx -> (((xRy /\ yRx) -> x = y) -> ((xRy /\ yRx) <-> x = y)))
23	22	19.20dv 1284	. . . . . . . 8 |- (xRx -> (A.y((xRy /\ yRx) -> x = y) -> A.y((xRy /\ yRx) <-> x = y)))
24	23	imp 350	. . . . . . 7 |- ((xRx /\ A.y((xRy /\ yRx) -> x = y)) -> A.y((xRy /\ yRx) <-> x = y))
25	15, 24	impbi 157	. . . . . 6 |- (A.y((xRy /\ yRx) <-> x = y) <-> (xRx /\ A.y((xRy /\ yRx) -> x = y)))
26	25	imbi2i 185	. . . . 5 |- ((x e. dom R -> A.y((xRy /\ yRx) <-> x = y)) <-> (x e. dom R -> (xRx /\ A.y((xRy /\ yRx) -> x = y))))
27		pm4.76 597	. . . . 5 |- (((x e. dom R -> xRx) /\ (x e. dom R -> A.y((xRy /\ yRx) -> x = y))) <-> (x e. dom R -> (xRx /\ A.y((xRy /\ yRx) -> x = y))))
28		visset 1804	. . . . . . . . . . . . 13 |- x e. V
29	28	breldm 3304	. . . . . . . . . . . 12 |- (xRy -> x e. dom R)
30	29	adantr 389	. . . . . . . . . . 11 |- ((xRy /\ yRx) -> x e. dom R)
31	30	pm4.71ri 636	. . . . . . . . . 10 |- ((xRy /\ yRx) <-> (x e. dom R /\ (xRy /\ yRx)))
32	31	imbi1i 186	. . . . . . . . 9 |- (((xRy /\ yRx) -> x = y) <-> ((x e. dom R /\ (xRy /\ yRx)) -> x = y))
33		impexp 347	. . . . . . . . 9 |- (((x e. dom R /\ (xRy /\ yRx)) -> x = y) <-> (x e. dom R -> ((xRy /\ yRx) -> x = y)))
34	32, 33	bitr 173	. . . . . . . 8 |- (((xRy /\ yRx) -> x = y) <-> (x e. dom R -> ((xRy /\ yRx) -> x = y)))
35	34	albii 996	. . . . . . 7 |- (A.y((xRy /\ yRx) -> x = y) <-> A.y(x e. dom R -> ((xRy /\ yRx) -> x = y)))
36		19.21v 1280	. . . . . . 7 |- (A.y(x e. dom R -> ((xRy /\ yRx) -> x = y)) <-> (x e. dom R -> A.y((xRy /\ yRx) -> x = y)))
37	35, 36	bitr2 174	. . . . . 6 |- ((x e. dom R -> A.y((xRy /\ yRx) -> x = y)) <-> A.y((xRy /\ yRx) -> x = y))
38	37	anbi2i 479	. . . . 5 |- (((x e. dom R -> xRx) /\ (x e. dom R -> A.y((xRy /\ yRx) -> x = y))) <-> ((x e. dom R -> xRx) /\ A.y((xRy /\ yRx) -> x = y)))
39	26, 27, 38	3bitr2 179	. . . 4 |- ((x e. dom R -> A.y((xRy /\ yRx) <-> x = y)) <-> ((x e. dom R -> xRx) /\ A.y((xRy /\ yRx) -> x = y)))
40	39	albii 996	. . 3 |- (A.x(x e. dom R -> A.y((xRy /\ yRx) <-> x = y)) <-> A.x((x e. dom R -> xRx) /\ A.y((xRy /\ yRx) -> x = y)))
41		19.26 1063	. . 3 |- (A.x((x e. dom R -> xRx) /\ A.y((xRy /\ yRx) -> x = y)) <-> (A.x(x e. dom R -> xRx) /\ A.xA.y((xRy /\ yRx) -> x = y)))
42	1, 40, 41	3bitr 177	. 2 |- (A.x e. dom RA.y((xRy /\ yRx) <-> x = y) <-> (A.x(x e. dom R -> xRx) /\ A.xA.y((xRy /\ yRx) -> x = y)))
43		asymrefOLD 3425	. 2 |- ((R i^i `'R) = (I |` dom R) <-> A.x e. dom RA.y((xRy /\ yRx) <-> x = y))
44		df-ral 1641	. . 3 |- (A.x e. dom R xRx <-> A.x(x e. dom R -> xRx))
45	44	anbi1i 480	. 2 |- ((A.x e. dom R xRx /\ A.xA.y((xRy /\ yRx) -> x = y)) <-> (A.x(x e. dom R -> xRx) /\ A.xA.y((xRy /\ yRx) -> x = y)))
46	42, 43, 45	3bitr4 183	1 |- ((R i^i `'R) = (I |` dom R) <-> (A.x e. dom R xRx /\ A.xA.y((xRy /\ yRx) -> x = y)))

Syntax hints:   -> wi 3   <-> wb 146   /\ wa 223  A.wal 951   = wceq 953   e. wcel 955  A.wral 1637   i^i cin 2036   class class class wbr 2609  Icid 2820  `'ccnv 3159  dom cdm 3160   |` cres 3162

This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 959  ax-gen 960  ax-8 961  ax-10 963  ax-11 964  ax-12 965  ax-13 966  ax-14 967  ax-17 968  ax-4 970  ax-5o 972  ax-6o 975  ax-9o 1119  ax-10o 1136  ax-16 1206  ax-11o 1213  ax-ext 1452  ax-sep 2693  ax-pow 2732  ax-pr 2769

This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-ex 978  df-sb 1168  df-eu 1375  df-mo 1376  df-clab 1457  df-cleq 1462  df-clel 1465  df-ne 1579  df-ral 1641  df-v 1803  df-dif 2039  df-un 2040  df-in 2041  df-ss 2043  df-nul 2271  df-pw 2392  df-sn 2402  df-pr 2403  df-op 2406  df-br 2610  df-opab 2657  df-id 2824  df-xp 3174  df-rel 3175  df-cnv 3176  df-dm 3178  df-res 3180

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