Theorem corcltrcl 37050

Description: The composition of the reflexive and transitive closures is the reflexive-transitive closure. (Contributed by RP, 17-Jun-2020.)

Assertion

Ref	Expression
corcltrcl	⊢ (r* ∘ t+) = t*

Proof of Theorem corcltrcl

Dummy variables 𝑎 𝑏 𝑐 𝑑 𝑖 𝑗 𝑘 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		dfrcl4 36987	. 2 ⊢ r* = (𝑎 ∈ V ↦ ∪ 𝑖 ∈ {0, 1} (𝑎↑𝑟𝑖))
2		dftrcl3 37031	. 2 ⊢ t+ = (𝑏 ∈ V ↦ ∪ 𝑗 ∈ ℕ (𝑏↑𝑟𝑗))
3		dfrtrcl3 37044	. 2 ⊢ t* = (𝑐 ∈ V ↦ ∪ 𝑘 ∈ ℕ0 (𝑐↑𝑟𝑘))
4		prex 4836	. 2 ⊢ {0, 1} ∈ V
5		nnex 10903	. 2 ⊢ ℕ ∈ V
6		df-n0 11170	. . 3 ⊢ ℕ0 = (ℕ ∪ {0})
7		uncom 3719	. . 3 ⊢ (ℕ ∪ {0}) = ({0} ∪ ℕ)
8		df-pr 4128	. . . . 5 ⊢ {0, 1} = ({0} ∪ {1})
9	8	uneq1i 3725	. . . 4 ⊢ ({0, 1} ∪ ℕ) = (({0} ∪ {1}) ∪ ℕ)
10		unass 3732	. . . 4 ⊢ (({0} ∪ {1}) ∪ ℕ) = ({0} ∪ ({1} ∪ ℕ))
11		1nn 10908	. . . . . . 7 ⊢ 1 ∈ ℕ
12		snssi 4280	. . . . . . 7 ⊢ (1 ∈ ℕ → {1} ⊆ ℕ)
13	11, 12	ax-mp 5	. . . . . 6 ⊢ {1} ⊆ ℕ
14		ssequn1 3745	. . . . . 6 ⊢ ({1} ⊆ ℕ ↔ ({1} ∪ ℕ) = ℕ)
15	13, 14	mpbi 219	. . . . 5 ⊢ ({1} ∪ ℕ) = ℕ
16	15	uneq2i 3726	. . . 4 ⊢ ({0} ∪ ({1} ∪ ℕ)) = ({0} ∪ ℕ)
17	9, 10, 16	3eqtrri 2637	. . 3 ⊢ ({0} ∪ ℕ) = ({0, 1} ∪ ℕ)
18	6, 7, 17	3eqtri 2636	. 2 ⊢ ℕ0 = ({0, 1} ∪ ℕ)
19		oveq2 6557	. . . 4 ⊢ (𝑘 = 𝑖 → (𝑑↑𝑟𝑘) = (𝑑↑𝑟𝑖))
20	19	cbviunv 4495	. . 3 ⊢ ∪ 𝑘 ∈ {0, 1} (𝑑↑𝑟𝑘) = ∪ 𝑖 ∈ {0, 1} (𝑑↑𝑟𝑖)
21		ss2iun 4472	. . . 4 ⊢ (∀𝑖 ∈ {0, 1} (𝑑↑𝑟𝑖) ⊆ (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) → ∪ 𝑖 ∈ {0, 1} (𝑑↑𝑟𝑖) ⊆ ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖))
22		vex 3176	. . . . . . . 8 ⊢ 𝑑 ∈ V
23		relexp1g 13614	. . . . . . . 8 ⊢ (𝑑 ∈ V → (𝑑↑𝑟1) = 𝑑)
24	22, 23	ax-mp 5	. . . . . . 7 ⊢ (𝑑↑𝑟1) = 𝑑
25		oveq2 6557	. . . . . . . . 9 ⊢ (𝑗 = 1 → (𝑑↑𝑟𝑗) = (𝑑↑𝑟1))
26	25	ssiun2s 4500	. . . . . . . 8 ⊢ (1 ∈ ℕ → (𝑑↑𝑟1) ⊆ ∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗))
27	11, 26	ax-mp 5	. . . . . . 7 ⊢ (𝑑↑𝑟1) ⊆ ∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)
28	24, 27	eqsstr3i 3599	. . . . . 6 ⊢ 𝑑 ⊆ ∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)
29	28	a1i 11	. . . . 5 ⊢ (𝑖 ∈ {0, 1} → 𝑑 ⊆ ∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗))
30		ovex 6577	. . . . . . 7 ⊢ (𝑑↑𝑟𝑗) ∈ V
31	5, 30	iunex 7039	. . . . . 6 ⊢ ∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗) ∈ V
32	31	a1i 11	. . . . 5 ⊢ (𝑖 ∈ {0, 1} → ∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗) ∈ V)
33		0nn0 11184	. . . . . . 7 ⊢ 0 ∈ ℕ0
34		1nn0 11185	. . . . . . 7 ⊢ 1 ∈ ℕ0
35		prssi 4293	. . . . . . 7 ⊢ ((0 ∈ ℕ0 ∧ 1 ∈ ℕ0) → {0, 1} ⊆ ℕ0)
36	33, 34, 35	mp2an 704	. . . . . 6 ⊢ {0, 1} ⊆ ℕ0
37	36	sseli 3564	. . . . 5 ⊢ (𝑖 ∈ {0, 1} → 𝑖 ∈ ℕ0)
38	29, 32, 37	relexpss1d 37016	. . . 4 ⊢ (𝑖 ∈ {0, 1} → (𝑑↑𝑟𝑖) ⊆ (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖))
39	21, 38	mprg 2910	. . 3 ⊢ ∪ 𝑖 ∈ {0, 1} (𝑑↑𝑟𝑖) ⊆ ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖)
40	20, 39	eqsstri 3598	. 2 ⊢ ∪ 𝑘 ∈ {0, 1} (𝑑↑𝑟𝑘) ⊆ ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖)
41		oveq2 6557	. . . . 5 ⊢ (𝑘 = 𝑗 → (𝑑↑𝑟𝑘) = (𝑑↑𝑟𝑗))
42	41	cbviunv 4495	. . . 4 ⊢ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘) = ∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)
43		relexp1g 13614	. . . . 5 ⊢ (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗) ∈ V → (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟1) = ∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗))
44	31, 43	ax-mp 5	. . . 4 ⊢ (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟1) = ∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)
45	42, 44	eqtr4i 2635	. . 3 ⊢ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘) = (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟1)
46		1ex 9914	. . . . 5 ⊢ 1 ∈ V
47	46	prid2 4242	. . . 4 ⊢ 1 ∈ {0, 1}
48		oveq2 6557	. . . . 5 ⊢ (𝑖 = 1 → (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟1))
49	48	ssiun2s 4500	. . . 4 ⊢ (1 ∈ {0, 1} → (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟1) ⊆ ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖))
50	47, 49	ax-mp 5	. . 3 ⊢ (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟1) ⊆ ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖)
51	45, 50	eqsstri 3598	. 2 ⊢ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘) ⊆ ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖)
52		c0ex 9913	. . . . . 6 ⊢ 0 ∈ V
53	52	prid1 4241	. . . . 5 ⊢ 0 ∈ {0, 1}
54		oveq2 6557	. . . . . 6 ⊢ (𝑘 = 0 → (𝑑↑𝑟𝑘) = (𝑑↑𝑟0))
55	54	ssiun2s 4500	. . . . 5 ⊢ (0 ∈ {0, 1} → (𝑑↑𝑟0) ⊆ ∪ 𝑘 ∈ {0, 1} (𝑑↑𝑟𝑘))
56	53, 55	ax-mp 5	. . . 4 ⊢ (𝑑↑𝑟0) ⊆ ∪ 𝑘 ∈ {0, 1} (𝑑↑𝑟𝑘)
57		ssid 3587	. . . 4 ⊢ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘) ⊆ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘)
58		unss12 3747	. . . 4 ⊢ (((𝑑↑𝑟0) ⊆ ∪ 𝑘 ∈ {0, 1} (𝑑↑𝑟𝑘) ∧ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘) ⊆ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘)) → ((𝑑↑𝑟0) ∪ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘)) ⊆ (∪ 𝑘 ∈ {0, 1} (𝑑↑𝑟𝑘) ∪ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘)))
59	56, 57, 58	mp2an 704	. . 3 ⊢ ((𝑑↑𝑟0) ∪ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘)) ⊆ (∪ 𝑘 ∈ {0, 1} (𝑑↑𝑟𝑘) ∪ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘))
60		iuneq1 4470	. . . . 5 ⊢ ({0, 1} = ({0} ∪ {1}) → ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = ∪ 𝑖 ∈ ({0} ∪ {1})(∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖))
61	8, 60	ax-mp 5	. . . 4 ⊢ ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = ∪ 𝑖 ∈ ({0} ∪ {1})(∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖)
62		iunxun 4541	. . . 4 ⊢ ∪ 𝑖 ∈ ({0} ∪ {1})(∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = (∪ 𝑖 ∈ {0} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) ∪ ∪ 𝑖 ∈ {1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖))
63		oveq2 6557	. . . . . . 7 ⊢ (𝑖 = 0 → (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟0))
64	52, 63	iunxsn 4539	. . . . . 6 ⊢ ∪ 𝑖 ∈ {0} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟0)
65		nnssnn0 11172	. . . . . . 7 ⊢ ℕ ⊆ ℕ0
66		inelcm 3984	. . . . . . . 8 ⊢ ((1 ∈ {0, 1} ∧ 1 ∈ ℕ) → ({0, 1} ∩ ℕ) ≠ ∅)
67	47, 11, 66	mp2an 704	. . . . . . 7 ⊢ ({0, 1} ∩ ℕ) ≠ ∅
68		iunrelexp0 37013	. . . . . . 7 ⊢ ((𝑑 ∈ V ∧ ℕ ⊆ ℕ0 ∧ ({0, 1} ∩ ℕ) ≠ ∅) → (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟0) = (𝑑↑𝑟0))
69	22, 65, 67, 68	mp3an 1416	. . . . . 6 ⊢ (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟0) = (𝑑↑𝑟0)
70	64, 69	eqtri 2632	. . . . 5 ⊢ ∪ 𝑖 ∈ {0} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = (𝑑↑𝑟0)
71	46, 48	iunxsn 4539	. . . . . 6 ⊢ ∪ 𝑖 ∈ {1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟1)
72	44, 42	eqtr4i 2635	. . . . . 6 ⊢ (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟1) = ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘)
73	71, 72	eqtri 2632	. . . . 5 ⊢ ∪ 𝑖 ∈ {1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘)
74	70, 73	uneq12i 3727	. . . 4 ⊢ (∪ 𝑖 ∈ {0} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) ∪ ∪ 𝑖 ∈ {1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖)) = ((𝑑↑𝑟0) ∪ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘))
75	61, 62, 74	3eqtri 2636	. . 3 ⊢ ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) = ((𝑑↑𝑟0) ∪ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘))
76		iunxun 4541	. . 3 ⊢ ∪ 𝑘 ∈ ({0, 1} ∪ ℕ)(𝑑↑𝑟𝑘) = (∪ 𝑘 ∈ {0, 1} (𝑑↑𝑟𝑘) ∪ ∪ 𝑘 ∈ ℕ (𝑑↑𝑟𝑘))
77	59, 75, 76	3sstr4i 3607	. 2 ⊢ ∪ 𝑖 ∈ {0, 1} (∪ 𝑗 ∈ ℕ (𝑑↑𝑟𝑗)↑𝑟𝑖) ⊆ ∪ 𝑘 ∈ ({0, 1} ∪ ℕ)(𝑑↑𝑟𝑘)
78	1, 2, 3, 4, 5, 18, 40, 51, 77	comptiunov2i 37017	1 ⊢ (r* ∘ t+) = t*

Syntax hints:   = wceq 1475   ∈ wcel 1977   ≠ wne 2780  Vcvv 3173   ∪ cun 3538   ∩ cin 3539   ⊆ wss 3540  ∅c0 3874  {csn 4125  {cpr 4127  ∪ ciun 4455   ∘ ccom 5042  (class class class)co 6549  0cc0 9815  1c1 9816  ℕcn 10897  ℕ₀cn0 11169  t+ctcl 13572  t*crtcl 13573  ↑_𝑟crelexp 13608  r*crcl 36983

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-om 6958  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-er 7629  df-en 7842  df-dom 7843  df-sdom 7844  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-nn 10898  df-2 10956  df-n0 11170  df-z 11255  df-uz 11564  df-seq 12664  df-trcl 13574  df-rtrcl 13575  df-relexp 13609  df-rcl 36984

This theorem is referenced by:  cortrcltrcl  37051  corclrtrcl  37052