ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  djudom GIF version

Theorem djudom 7397
Description: Dominance law for disjoint union. (Contributed by Jim Kingdon, 25-Jul-2022.)
Assertion
Ref Expression
djudom ((𝐴𝐵𝐶𝐷) → (𝐴𝐶) ≼ (𝐵𝐷))

Proof of Theorem djudom
Dummy variables 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 brdomi 6999 . . 3 (𝐴𝐵 → ∃𝑓 𝑓:𝐴1-1𝐵)
21adantr 276 . 2 ((𝐴𝐵𝐶𝐷) → ∃𝑓 𝑓:𝐴1-1𝐵)
3 brdomi 6999 . . . 4 (𝐶𝐷 → ∃𝑔 𝑔:𝐶1-1𝐷)
43ad2antlr 489 . . 3 (((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) → ∃𝑔 𝑔:𝐶1-1𝐷)
5 inlresf1 7365 . . . . . . . . 9 (inl ↾ 𝐵):𝐵1-1→(𝐵𝐷)
6 simplr 529 . . . . . . . . 9 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → 𝑓:𝐴1-1𝐵)
7 f1co 5590 . . . . . . . . 9 (((inl ↾ 𝐵):𝐵1-1→(𝐵𝐷) ∧ 𝑓:𝐴1-1𝐵) → ((inl ↾ 𝐵) ∘ 𝑓):𝐴1-1→(𝐵𝐷))
85, 6, 7sylancr 414 . . . . . . . 8 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ((inl ↾ 𝐵) ∘ 𝑓):𝐴1-1→(𝐵𝐷))
9 inrresf1 7366 . . . . . . . . 9 (inr ↾ 𝐷):𝐷1-1→(𝐵𝐷)
10 simpr 110 . . . . . . . . 9 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → 𝑔:𝐶1-1𝐷)
11 f1co 5590 . . . . . . . . 9 (((inr ↾ 𝐷):𝐷1-1→(𝐵𝐷) ∧ 𝑔:𝐶1-1𝐷) → ((inr ↾ 𝐷) ∘ 𝑔):𝐶1-1→(𝐵𝐷))
129, 10, 11sylancr 414 . . . . . . . 8 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ((inr ↾ 𝐷) ∘ 𝑔):𝐶1-1→(𝐵𝐷))
13 rnco 5274 . . . . . . . . . . 11 ran ((inl ↾ 𝐵) ∘ 𝑓) = ran ((inl ↾ 𝐵) ↾ ran 𝑓)
14 f1rn 5579 . . . . . . . . . . . . . 14 (𝑓:𝐴1-1𝐵 → ran 𝑓𝐵)
1514ad2antlr 489 . . . . . . . . . . . . 13 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ran 𝑓𝐵)
16 resabs1 5072 . . . . . . . . . . . . 13 (ran 𝑓𝐵 → ((inl ↾ 𝐵) ↾ ran 𝑓) = (inl ↾ ran 𝑓))
1715, 16syl 14 . . . . . . . . . . . 12 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ((inl ↾ 𝐵) ↾ ran 𝑓) = (inl ↾ ran 𝑓))
1817rneqd 4991 . . . . . . . . . . 11 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ran ((inl ↾ 𝐵) ↾ ran 𝑓) = ran (inl ↾ ran 𝑓))
1913, 18eqtrid 2279 . . . . . . . . . 10 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ran ((inl ↾ 𝐵) ∘ 𝑓) = ran (inl ↾ ran 𝑓))
20 rnco 5274 . . . . . . . . . . 11 ran ((inr ↾ 𝐷) ∘ 𝑔) = ran ((inr ↾ 𝐷) ↾ ran 𝑔)
21 f1rn 5579 . . . . . . . . . . . . 13 (𝑔:𝐶1-1𝐷 → ran 𝑔𝐷)
22 resabs1 5072 . . . . . . . . . . . . 13 (ran 𝑔𝐷 → ((inr ↾ 𝐷) ↾ ran 𝑔) = (inr ↾ ran 𝑔))
2310, 21, 223syl 17 . . . . . . . . . . . 12 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ((inr ↾ 𝐷) ↾ ran 𝑔) = (inr ↾ ran 𝑔))
2423rneqd 4991 . . . . . . . . . . 11 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ran ((inr ↾ 𝐷) ↾ ran 𝑔) = ran (inr ↾ ran 𝑔))
2520, 24eqtrid 2279 . . . . . . . . . 10 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ran ((inr ↾ 𝐷) ∘ 𝑔) = ran (inr ↾ ran 𝑔))
2619, 25ineq12d 3427 . . . . . . . . 9 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → (ran ((inl ↾ 𝐵) ∘ 𝑓) ∩ ran ((inr ↾ 𝐷) ∘ 𝑔)) = (ran (inl ↾ ran 𝑓) ∩ ran (inr ↾ ran 𝑔)))
27 djuinr 7367 . . . . . . . . 9 (ran (inl ↾ ran 𝑓) ∩ ran (inr ↾ ran 𝑔)) = ∅
2826, 27eqtrdi 2283 . . . . . . . 8 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → (ran ((inl ↾ 𝐵) ∘ 𝑓) ∩ ran ((inr ↾ 𝐷) ∘ 𝑔)) = ∅)
298, 12, 28casef1 7394 . . . . . . 7 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)):(𝐴𝐶)–1-1→(𝐵𝐷))
30 f1f 5578 . . . . . . 7 (case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)):(𝐴𝐶)–1-1→(𝐵𝐷) → case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)):(𝐴𝐶)⟶(𝐵𝐷))
3129, 30syl 14 . . . . . 6 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)):(𝐴𝐶)⟶(𝐵𝐷))
32 reldom 6993 . . . . . . . . 9 Rel ≼
3332brrelex1i 4798 . . . . . . . 8 (𝐴𝐵𝐴 ∈ V)
3433ad3antrrr 492 . . . . . . 7 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → 𝐴 ∈ V)
3532brrelex1i 4798 . . . . . . . 8 (𝐶𝐷𝐶 ∈ V)
3635ad3antlr 493 . . . . . . 7 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → 𝐶 ∈ V)
37 djuex 7347 . . . . . . 7 ((𝐴 ∈ V ∧ 𝐶 ∈ V) → (𝐴𝐶) ∈ V)
3834, 36, 37syl2anc 411 . . . . . 6 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → (𝐴𝐶) ∈ V)
39 fex 5920 . . . . . 6 ((case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)):(𝐴𝐶)⟶(𝐵𝐷) ∧ (𝐴𝐶) ∈ V) → case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)) ∈ V)
4031, 38, 39syl2anc 411 . . . . 5 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)) ∈ V)
41 f1eq1 5573 . . . . . 6 ( = case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)) → (:(𝐴𝐶)–1-1→(𝐵𝐷) ↔ case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)):(𝐴𝐶)–1-1→(𝐵𝐷)))
4241spcegv 2907 . . . . 5 (case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)) ∈ V → (case(((inl ↾ 𝐵) ∘ 𝑓), ((inr ↾ 𝐷) ∘ 𝑔)):(𝐴𝐶)–1-1→(𝐵𝐷) → ∃ :(𝐴𝐶)–1-1→(𝐵𝐷)))
4340, 29, 42sylc 62 . . . 4 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ∃ :(𝐴𝐶)–1-1→(𝐵𝐷))
4432brrelex2i 4799 . . . . . 6 (𝐴𝐵𝐵 ∈ V)
4544ad3antrrr 492 . . . . 5 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → 𝐵 ∈ V)
4632brrelex2i 4799 . . . . . 6 (𝐶𝐷𝐷 ∈ V)
4746ad3antlr 493 . . . . 5 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → 𝐷 ∈ V)
48 djuex 7347 . . . . . 6 ((𝐵 ∈ V ∧ 𝐷 ∈ V) → (𝐵𝐷) ∈ V)
49 brdomg 6998 . . . . . 6 ((𝐵𝐷) ∈ V → ((𝐴𝐶) ≼ (𝐵𝐷) ↔ ∃ :(𝐴𝐶)–1-1→(𝐵𝐷)))
5048, 49syl 14 . . . . 5 ((𝐵 ∈ V ∧ 𝐷 ∈ V) → ((𝐴𝐶) ≼ (𝐵𝐷) ↔ ∃ :(𝐴𝐶)–1-1→(𝐵𝐷)))
5145, 47, 50syl2anc 411 . . . 4 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → ((𝐴𝐶) ≼ (𝐵𝐷) ↔ ∃ :(𝐴𝐶)–1-1→(𝐵𝐷)))
5243, 51mpbird 167 . . 3 ((((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) ∧ 𝑔:𝐶1-1𝐷) → (𝐴𝐶) ≼ (𝐵𝐷))
534, 52exlimddv 1950 . 2 (((𝐴𝐵𝐶𝐷) ∧ 𝑓:𝐴1-1𝐵) → (𝐴𝐶) ≼ (𝐵𝐷))
542, 53exlimddv 1950 1 ((𝐴𝐵𝐶𝐷) → (𝐴𝐶) ≼ (𝐵𝐷))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wb 105   = wceq 1398  wex 1541  wcel 2205  Vcvv 2815  cin 3213  wss 3214  c0 3512   class class class wbr 4114  ran crn 4755  cres 4756  ccom 4758  wf 5353  1-1wf1 5354  cdom 6987  cdju 7341  inlcinl 7349  inrcinr 7350  casecdjucase 7387
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-coll 4230  ax-sep 4233  ax-nul 4241  ax-pow 4292  ax-pr 4327  ax-un 4559
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-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-iun 3998  df-br 4115  df-opab 4177  df-mpt 4178  df-tr 4214  df-id 4419  df-iord 4492  df-on 4494  df-suc 4497  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-f1 5362  df-fo 5363  df-f1o 5364  df-fv 5365  df-1st 6347  df-2nd 6348  df-1o 6660  df-dom 6990  df-dju 7342  df-inl 7351  df-inr 7352  df-case 7388
This theorem is referenced by:  exmidfodomrlemr  7518  exmidfodomrlemrALT  7519  sbthom  16932
  Copyright terms: Public domain W3C validator