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Theorem brtrclfv2 38519
Description: Two ways to indicate two elements are related by the transitive closure of a relation. (Contributed by RP, 1-Jul-2020.)
Assertion
Ref Expression
brtrclfv2 ((𝑋𝑈𝑌𝑉𝑅𝑊) → (𝑋(t+‘𝑅)𝑌𝑌 {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓}))
Distinct variable groups:   𝑅,𝑓   𝑈,𝑓   𝑓,𝑉   𝑓,𝑊   𝑓,𝑋   𝑓,𝑌

Proof of Theorem brtrclfv2
Dummy variables 𝑔 𝑟 𝑠 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-br 4845 . . . 4 (𝑋 {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑌 ↔ ⟨𝑋, 𝑌⟩ ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)})
21a1i 11 . . 3 ((𝑋𝑈𝑌𝑉𝑅𝑊) → (𝑋 {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑌 ↔ ⟨𝑋, 𝑌⟩ ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}))
3 trclfv 13964 . . . . 5 (𝑅𝑊 → (t+‘𝑅) = {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)})
43breqd 4855 . . . 4 (𝑅𝑊 → (𝑋(t+‘𝑅)𝑌𝑋 {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑌))
543ad2ant3 1158 . . 3 ((𝑋𝑈𝑌𝑉𝑅𝑊) → (𝑋(t+‘𝑅)𝑌𝑋 {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑌))
6 elimasng 5701 . . . 4 ((𝑋𝑈𝑌𝑉) → (𝑌 ∈ ( {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)} “ {𝑋}) ↔ ⟨𝑋, 𝑌⟩ ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}))
763adant3 1155 . . 3 ((𝑋𝑈𝑌𝑉𝑅𝑊) → (𝑌 ∈ ( {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)} “ {𝑋}) ↔ ⟨𝑋, 𝑌⟩ ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}))
82, 5, 73bitr4d 302 . 2 ((𝑋𝑈𝑌𝑉𝑅𝑊) → (𝑋(t+‘𝑅)𝑌𝑌 ∈ ( {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)} “ {𝑋})))
9 intimasn 38449 . . . . 5 (𝑋𝑈 → ( {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)} “ {𝑋}) = {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})})
1093ad2ant1 1156 . . . 4 ((𝑋𝑈𝑌𝑉𝑅𝑊) → ( {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)} “ {𝑋}) = {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})})
11 simpl3 1239 . . . . . . . . . . . . . 14 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → 𝑅𝑊)
12 snex 5098 . . . . . . . . . . . . . . 15 {𝑋} ∈ V
13 vex 3394 . . . . . . . . . . . . . . 15 𝑓 ∈ V
1412, 13xpex 7192 . . . . . . . . . . . . . 14 ({𝑋} × 𝑓) ∈ V
15 unexg 7189 . . . . . . . . . . . . . 14 ((𝑅𝑊 ∧ ({𝑋} × 𝑓) ∈ V) → (𝑅 ∪ ({𝑋} × 𝑓)) ∈ V)
1611, 14, 15sylancl 576 . . . . . . . . . . . . 13 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → (𝑅 ∪ ({𝑋} × 𝑓)) ∈ V)
17 trclfvlb 13972 . . . . . . . . . . . . . 14 ((𝑅 ∪ ({𝑋} × 𝑓)) ∈ V → (𝑅 ∪ ({𝑋} × 𝑓)) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
1817unssad 3989 . . . . . . . . . . . . 13 ((𝑅 ∪ ({𝑋} × 𝑓)) ∈ V → 𝑅 ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
1916, 18syl 17 . . . . . . . . . . . 12 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → 𝑅 ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
20 trclfvcotrg 13980 . . . . . . . . . . . . 13 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))
2120a1i 11 . . . . . . . . . . . 12 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
22 simpl1 1235 . . . . . . . . . . . . . . . . 17 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → 𝑋𝑈)
23 snidg 4400 . . . . . . . . . . . . . . . . 17 (𝑋𝑈𝑋 ∈ {𝑋})
2422, 23syl 17 . . . . . . . . . . . . . . . 16 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → 𝑋 ∈ {𝑋})
25 inelcm 4229 . . . . . . . . . . . . . . . 16 ((𝑋 ∈ {𝑋} ∧ 𝑋 ∈ {𝑋}) → ({𝑋} ∩ {𝑋}) ≠ ∅)
2624, 24, 25syl2anc 575 . . . . . . . . . . . . . . 15 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → ({𝑋} ∩ {𝑋}) ≠ ∅)
27 xpima2 5789 . . . . . . . . . . . . . . 15 (({𝑋} ∩ {𝑋}) ≠ ∅ → (({𝑋} × 𝑓) “ {𝑋}) = 𝑓)
2826, 27syl 17 . . . . . . . . . . . . . 14 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → (({𝑋} × 𝑓) “ {𝑋}) = 𝑓)
2916, 17syl 17 . . . . . . . . . . . . . . . 16 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → (𝑅 ∪ ({𝑋} × 𝑓)) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
3029unssbd 3990 . . . . . . . . . . . . . . 15 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → ({𝑋} × 𝑓) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
31 imass1 5710 . . . . . . . . . . . . . . 15 (({𝑋} × 𝑓) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) → (({𝑋} × 𝑓) “ {𝑋}) ⊆ ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋}))
3230, 31syl 17 . . . . . . . . . . . . . 14 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → (({𝑋} × 𝑓) “ {𝑋}) ⊆ ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋}))
3328, 32eqsstr3d 3837 . . . . . . . . . . . . 13 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → 𝑓 ⊆ ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋}))
34 imaundir 5757 . . . . . . . . . . . . . . 15 ((𝑅 ∪ ({𝑋} × 𝑓)) “ ({𝑋} ∪ 𝑓)) = ((𝑅 “ ({𝑋} ∪ 𝑓)) ∪ (({𝑋} × 𝑓) “ ({𝑋} ∪ 𝑓)))
35 simpr 473 . . . . . . . . . . . . . . . 16 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓)
36 imassrn 5687 . . . . . . . . . . . . . . . . . 18 (({𝑋} × 𝑓) “ ({𝑋} ∪ 𝑓)) ⊆ ran ({𝑋} × 𝑓)
37 rnxpss 5777 . . . . . . . . . . . . . . . . . 18 ran ({𝑋} × 𝑓) ⊆ 𝑓
3836, 37sstri 3807 . . . . . . . . . . . . . . . . 17 (({𝑋} × 𝑓) “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓
3938a1i 11 . . . . . . . . . . . . . . . 16 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → (({𝑋} × 𝑓) “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓)
4035, 39unssd 3988 . . . . . . . . . . . . . . 15 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → ((𝑅 “ ({𝑋} ∪ 𝑓)) ∪ (({𝑋} × 𝑓) “ ({𝑋} ∪ 𝑓))) ⊆ 𝑓)
4134, 40syl5eqss 3846 . . . . . . . . . . . . . 14 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → ((𝑅 ∪ ({𝑋} × 𝑓)) “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓)
42 trclimalb2 38518 . . . . . . . . . . . . . 14 (((𝑅 ∪ ({𝑋} × 𝑓)) ∈ V ∧ ((𝑅 ∪ ({𝑋} × 𝑓)) “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋}) ⊆ 𝑓)
4316, 41, 42syl2anc 575 . . . . . . . . . . . . 13 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋}) ⊆ 𝑓)
4433, 43eqssd 3815 . . . . . . . . . . . 12 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → 𝑓 = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋}))
45 sbcan 3676 . . . . . . . . . . . . 13 ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑓 = (𝑟 “ {𝑋})) ↔ ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟](𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ [(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑓 = (𝑟 “ {𝑋})))
46 sbcan 3676 . . . . . . . . . . . . . . 15 ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟](𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ↔ ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑅𝑟[(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟](𝑟𝑟) ⊆ 𝑟))
47 fvex 6421 . . . . . . . . . . . . . . . . . 18 (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∈ V
48 sbcssg 4278 . . . . . . . . . . . . . . . . . 18 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∈ V → ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑅𝑟(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑅(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟))
4947, 48ax-mp 5 . . . . . . . . . . . . . . . . 17 ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑅𝑟(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑅(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟)
50 csbconstg 3741 . . . . . . . . . . . . . . . . . . 19 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∈ V → (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑅 = 𝑅)
5147, 50ax-mp 5 . . . . . . . . . . . . . . . . . 18 (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑅 = 𝑅
5247csbvargi 4201 . . . . . . . . . . . . . . . . . 18 (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟 = (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))
5351, 52sseq12i 3828 . . . . . . . . . . . . . . . . 17 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑅(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟𝑅 ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
5449, 53bitri 266 . . . . . . . . . . . . . . . 16 ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑅𝑟𝑅 ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
55 sbcssg 4278 . . . . . . . . . . . . . . . . . 18 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∈ V → ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟](𝑟𝑟) ⊆ 𝑟(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟𝑟) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟))
5647, 55ax-mp 5 . . . . . . . . . . . . . . . . 17 ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟](𝑟𝑟) ⊆ 𝑟(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟𝑟) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟)
57 csbcog 38441 . . . . . . . . . . . . . . . . . . . 20 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∈ V → (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟𝑟) = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟))
5847, 57ax-mp 5 . . . . . . . . . . . . . . . . . . 19 (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟𝑟) = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟)
5952, 52coeq12i 5487 . . . . . . . . . . . . . . . . . . 19 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟) = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
6058, 59eqtri 2828 . . . . . . . . . . . . . . . . . 18 (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟𝑟) = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
6160, 52sseq12i 3828 . . . . . . . . . . . . . . . . 17 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟𝑟) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟 ↔ ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
6256, 61bitri 266 . . . . . . . . . . . . . . . 16 ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟](𝑟𝑟) ⊆ 𝑟 ↔ ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))))
6354, 62anbi12i 614 . . . . . . . . . . . . . . 15 (([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑅𝑟[(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟](𝑟𝑟) ⊆ 𝑟) ↔ (𝑅 ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∧ ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))))
6446, 63bitri 266 . . . . . . . . . . . . . 14 ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟](𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ↔ (𝑅 ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∧ ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))))
65 sbceq2g 4187 . . . . . . . . . . . . . . . 16 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∈ V → ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑓 = (𝑟 “ {𝑋}) ↔ 𝑓 = (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟 “ {𝑋})))
6647, 65ax-mp 5 . . . . . . . . . . . . . . 15 ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑓 = (𝑟 “ {𝑋}) ↔ 𝑓 = (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟 “ {𝑋}))
67 csbima12 5693 . . . . . . . . . . . . . . . . 17 (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟 “ {𝑋}) = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟{𝑋})
6852imaeq1i 5673 . . . . . . . . . . . . . . . . 17 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟𝑟(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟{𝑋}) = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟{𝑋})
69 csbconstg 3741 . . . . . . . . . . . . . . . . . . 19 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∈ V → (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟{𝑋} = {𝑋})
7047, 69ax-mp 5 . . . . . . . . . . . . . . . . . 18 (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟{𝑋} = {𝑋}
7170imaeq2i 5674 . . . . . . . . . . . . . . . . 17 ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟{𝑋}) = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋})
7267, 68, 713eqtri 2832 . . . . . . . . . . . . . . . 16 (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟 “ {𝑋}) = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋})
7372eqeq2i 2818 . . . . . . . . . . . . . . 15 (𝑓 = (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟(𝑟 “ {𝑋}) ↔ 𝑓 = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋}))
7466, 73bitri 266 . . . . . . . . . . . . . 14 ([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑓 = (𝑟 “ {𝑋}) ↔ 𝑓 = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋}))
7564, 74anbi12i 614 . . . . . . . . . . . . 13 (([(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟](𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ [(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]𝑓 = (𝑟 “ {𝑋})) ↔ ((𝑅 ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∧ ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ∧ 𝑓 = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋})))
7645, 75sylbbr 227 . . . . . . . . . . . 12 (((𝑅 ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∧ ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) ∘ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ⊆ (t+‘(𝑅 ∪ ({𝑋} × 𝑓)))) ∧ 𝑓 = ((t+‘(𝑅 ∪ ({𝑋} × 𝑓))) “ {𝑋})) → [(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑓 = (𝑟 “ {𝑋})))
7719, 21, 44, 76syl21anc 857 . . . . . . . . . . 11 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → [(t+‘(𝑅 ∪ ({𝑋} × 𝑓))) / 𝑟]((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑓 = (𝑟 “ {𝑋})))
7877spesbcd 3717 . . . . . . . . . 10 (((𝑋𝑈𝑌𝑉𝑅𝑊) ∧ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓) → ∃𝑟((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑓 = (𝑟 “ {𝑋})))
7978ex 399 . . . . . . . . 9 ((𝑋𝑈𝑌𝑉𝑅𝑊) → ((𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓 → ∃𝑟((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑓 = (𝑟 “ {𝑋}))))
80 eqeq1 2810 . . . . . . . . . . . 12 (𝑔 = 𝑓 → (𝑔 = (𝑠 “ {𝑋}) ↔ 𝑓 = (𝑠 “ {𝑋})))
8180rexbidv 3240 . . . . . . . . . . 11 (𝑔 = 𝑓 → (∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋}) ↔ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑓 = (𝑠 “ {𝑋})))
82 imaeq1 5671 . . . . . . . . . . . . 13 (𝑠 = 𝑟 → (𝑠 “ {𝑋}) = (𝑟 “ {𝑋}))
8382eqeq2d 2816 . . . . . . . . . . . 12 (𝑠 = 𝑟 → (𝑓 = (𝑠 “ {𝑋}) ↔ 𝑓 = (𝑟 “ {𝑋})))
8483rexab2 3569 . . . . . . . . . . 11 (∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑓 = (𝑠 “ {𝑋}) ↔ ∃𝑟((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑓 = (𝑟 “ {𝑋})))
8581, 84syl6bb 278 . . . . . . . . . 10 (𝑔 = 𝑓 → (∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋}) ↔ ∃𝑟((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑓 = (𝑟 “ {𝑋}))))
8613, 85elab 3545 . . . . . . . . 9 (𝑓 ∈ {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} ↔ ∃𝑟((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑓 = (𝑟 “ {𝑋})))
8779, 86syl6ibr 243 . . . . . . . 8 ((𝑋𝑈𝑌𝑉𝑅𝑊) → ((𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓𝑓 ∈ {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})}))
88 intss1 4684 . . . . . . . 8 (𝑓 ∈ {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} → {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} ⊆ 𝑓)
8987, 88syl6 35 . . . . . . 7 ((𝑋𝑈𝑌𝑉𝑅𝑊) → ((𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓 {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} ⊆ 𝑓))
9089alrimiv 2018 . . . . . 6 ((𝑋𝑈𝑌𝑉𝑅𝑊) → ∀𝑓((𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓 {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} ⊆ 𝑓))
91 ssintab 4686 . . . . . 6 ( {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} ⊆ {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓} ↔ ∀𝑓((𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓 {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} ⊆ 𝑓))
9290, 91sylibr 225 . . . . 5 ((𝑋𝑈𝑌𝑉𝑅𝑊) → {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} ⊆ {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓})
93 ssintab 4686 . . . . . . 7 ( {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓} ⊆ {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} ↔ ∀𝑔(∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋}) → {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓} ⊆ 𝑔))
9482eqeq2d 2816 . . . . . . . . . 10 (𝑠 = 𝑟 → (𝑔 = (𝑠 “ {𝑋}) ↔ 𝑔 = (𝑟 “ {𝑋})))
9594rexab2 3569 . . . . . . . . 9 (∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋}) ↔ ∃𝑟((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑔 = (𝑟 “ {𝑋})))
96 simpr 473 . . . . . . . . . . 11 (((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑔 = (𝑟 “ {𝑋})) → 𝑔 = (𝑟 “ {𝑋}))
97 imass1 5710 . . . . . . . . . . . . . . 15 (𝑅𝑟 → (𝑅 “ {𝑋}) ⊆ (𝑟 “ {𝑋}))
9897adantr 468 . . . . . . . . . . . . . 14 ((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) → (𝑅 “ {𝑋}) ⊆ (𝑟 “ {𝑋}))
99 imass1 5710 . . . . . . . . . . . . . . 15 (𝑅𝑟 → (𝑅 “ (𝑟 “ {𝑋})) ⊆ (𝑟 “ (𝑟 “ {𝑋})))
100 imaco 5854 . . . . . . . . . . . . . . . 16 ((𝑟𝑟) “ {𝑋}) = (𝑟 “ (𝑟 “ {𝑋}))
101 imass1 5710 . . . . . . . . . . . . . . . 16 ((𝑟𝑟) ⊆ 𝑟 → ((𝑟𝑟) “ {𝑋}) ⊆ (𝑟 “ {𝑋}))
102100, 101syl5eqssr 3847 . . . . . . . . . . . . . . 15 ((𝑟𝑟) ⊆ 𝑟 → (𝑟 “ (𝑟 “ {𝑋})) ⊆ (𝑟 “ {𝑋}))
10399, 102sylan9ss 3811 . . . . . . . . . . . . . 14 ((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) → (𝑅 “ (𝑟 “ {𝑋})) ⊆ (𝑟 “ {𝑋}))
10498, 103jca 503 . . . . . . . . . . . . 13 ((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) → ((𝑅 “ {𝑋}) ⊆ (𝑟 “ {𝑋}) ∧ (𝑅 “ (𝑟 “ {𝑋})) ⊆ (𝑟 “ {𝑋})))
105104adantr 468 . . . . . . . . . . . 12 (((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑔 = (𝑟 “ {𝑋})) → ((𝑅 “ {𝑋}) ⊆ (𝑟 “ {𝑋}) ∧ (𝑅 “ (𝑟 “ {𝑋})) ⊆ (𝑟 “ {𝑋})))
106 vex 3394 . . . . . . . . . . . . . 14 𝑟 ∈ V
107 imaexg 7333 . . . . . . . . . . . . . 14 (𝑟 ∈ V → (𝑟 “ {𝑋}) ∈ V)
108106, 107ax-mp 5 . . . . . . . . . . . . 13 (𝑟 “ {𝑋}) ∈ V
109 imaundi 5756 . . . . . . . . . . . . . . . 16 (𝑅 “ ({𝑋} ∪ 𝑓)) = ((𝑅 “ {𝑋}) ∪ (𝑅𝑓))
110109sseq1i 3826 . . . . . . . . . . . . . . 15 ((𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓 ↔ ((𝑅 “ {𝑋}) ∪ (𝑅𝑓)) ⊆ 𝑓)
111 unss 3986 . . . . . . . . . . . . . . 15 (((𝑅 “ {𝑋}) ⊆ 𝑓 ∧ (𝑅𝑓) ⊆ 𝑓) ↔ ((𝑅 “ {𝑋}) ∪ (𝑅𝑓)) ⊆ 𝑓)
112110, 111bitr4i 269 . . . . . . . . . . . . . 14 ((𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓 ↔ ((𝑅 “ {𝑋}) ⊆ 𝑓 ∧ (𝑅𝑓) ⊆ 𝑓))
113 imaeq2 5672 . . . . . . . . . . . . . . . 16 (𝑓 = (𝑟 “ {𝑋}) → (𝑅𝑓) = (𝑅 “ (𝑟 “ {𝑋})))
114 id 22 . . . . . . . . . . . . . . . 16 (𝑓 = (𝑟 “ {𝑋}) → 𝑓 = (𝑟 “ {𝑋}))
115113, 114sseq12d 3831 . . . . . . . . . . . . . . 15 (𝑓 = (𝑟 “ {𝑋}) → ((𝑅𝑓) ⊆ 𝑓 ↔ (𝑅 “ (𝑟 “ {𝑋})) ⊆ (𝑟 “ {𝑋})))
116115cleq2lem 38414 . . . . . . . . . . . . . 14 (𝑓 = (𝑟 “ {𝑋}) → (((𝑅 “ {𝑋}) ⊆ 𝑓 ∧ (𝑅𝑓) ⊆ 𝑓) ↔ ((𝑅 “ {𝑋}) ⊆ (𝑟 “ {𝑋}) ∧ (𝑅 “ (𝑟 “ {𝑋})) ⊆ (𝑟 “ {𝑋}))))
117112, 116syl5bb 274 . . . . . . . . . . . . 13 (𝑓 = (𝑟 “ {𝑋}) → ((𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓 ↔ ((𝑅 “ {𝑋}) ⊆ (𝑟 “ {𝑋}) ∧ (𝑅 “ (𝑟 “ {𝑋})) ⊆ (𝑟 “ {𝑋}))))
118108, 117elab 3545 . . . . . . . . . . . 12 ((𝑟 “ {𝑋}) ∈ {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓} ↔ ((𝑅 “ {𝑋}) ⊆ (𝑟 “ {𝑋}) ∧ (𝑅 “ (𝑟 “ {𝑋})) ⊆ (𝑟 “ {𝑋})))
119105, 118sylibr 225 . . . . . . . . . . 11 (((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑔 = (𝑟 “ {𝑋})) → (𝑟 “ {𝑋}) ∈ {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓})
12096, 119eqeltrd 2885 . . . . . . . . . 10 (((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑔 = (𝑟 “ {𝑋})) → 𝑔 ∈ {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓})
121120exlimiv 2021 . . . . . . . . 9 (∃𝑟((𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟) ∧ 𝑔 = (𝑟 “ {𝑋})) → 𝑔 ∈ {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓})
12295, 121sylbi 208 . . . . . . . 8 (∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋}) → 𝑔 ∈ {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓})
123 intss1 4684 . . . . . . . 8 (𝑔 ∈ {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓} → {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓} ⊆ 𝑔)
124122, 123syl 17 . . . . . . 7 (∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋}) → {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓} ⊆ 𝑔)
12593, 124mpgbir 1881 . . . . . 6 {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓} ⊆ {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})}
126125a1i 11 . . . . 5 ((𝑋𝑈𝑌𝑉𝑅𝑊) → {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓} ⊆ {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})})
12792, 126eqssd 3815 . . . 4 ((𝑋𝑈𝑌𝑉𝑅𝑊) → {𝑔 ∣ ∃𝑠 ∈ {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)}𝑔 = (𝑠 “ {𝑋})} = {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓})
12810, 127eqtrd 2840 . . 3 ((𝑋𝑈𝑌𝑉𝑅𝑊) → ( {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)} “ {𝑋}) = {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓})
129128eleq2d 2871 . 2 ((𝑋𝑈𝑌𝑉𝑅𝑊) → (𝑌 ∈ ( {𝑟 ∣ (𝑅𝑟 ∧ (𝑟𝑟) ⊆ 𝑟)} “ {𝑋}) ↔ 𝑌 {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓}))
1308, 129bitrd 270 1 ((𝑋𝑈𝑌𝑉𝑅𝑊) → (𝑋(t+‘𝑅)𝑌𝑌 {𝑓 ∣ (𝑅 “ ({𝑋} ∪ 𝑓)) ⊆ 𝑓}))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 197  wa 384  w3a 1100  wal 1635   = wceq 1637  wex 1859  wcel 2156  {cab 2792  wne 2978  wrex 3097  Vcvv 3391  [wsbc 3633  csb 3728  cun 3767  cin 3768  wss 3769  c0 4116  {csn 4370  cop 4376   cint 4669   class class class wbr 4844   × cxp 5309  ran crn 5312  cima 5314  ccom 5315  cfv 6101  t+ctcl 13949
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1877  ax-4 1894  ax-5 2001  ax-6 2068  ax-7 2104  ax-8 2158  ax-9 2165  ax-10 2185  ax-11 2201  ax-12 2214  ax-13 2420  ax-ext 2784  ax-rep 4964  ax-sep 4975  ax-nul 4983  ax-pow 5035  ax-pr 5096  ax-un 7179  ax-cnex 10277  ax-resscn 10278  ax-1cn 10279  ax-icn 10280  ax-addcl 10281  ax-addrcl 10282  ax-mulcl 10283  ax-mulrcl 10284  ax-mulcom 10285  ax-addass 10286  ax-mulass 10287  ax-distr 10288  ax-i2m1 10289  ax-1ne0 10290  ax-1rid 10291  ax-rnegex 10292  ax-rrecex 10293  ax-cnre 10294  ax-pre-lttri 10295  ax-pre-lttrn 10296  ax-pre-ltadd 10297  ax-pre-mulgt0 10298
This theorem depends on definitions:  df-bi 198  df-an 385  df-or 866  df-3or 1101  df-3an 1102  df-tru 1641  df-fal 1651  df-ex 1860  df-nf 1864  df-sb 2061  df-eu 2634  df-mo 2635  df-clab 2793  df-cleq 2799  df-clel 2802  df-nfc 2937  df-ne 2979  df-nel 3082  df-ral 3101  df-rex 3102  df-reu 3103  df-rab 3105  df-v 3393  df-sbc 3634  df-csb 3729  df-dif 3772  df-un 3774  df-in 3776  df-ss 3783  df-pss 3785  df-nul 4117  df-if 4280  df-pw 4353  df-sn 4371  df-pr 4373  df-tp 4375  df-op 4377  df-uni 4631  df-int 4670  df-iun 4714  df-br 4845  df-opab 4907  df-mpt 4924  df-tr 4947  df-id 5219  df-eprel 5224  df-po 5232  df-so 5233  df-fr 5270  df-we 5272  df-xp 5317  df-rel 5318  df-cnv 5319  df-co 5320  df-dm 5321  df-rn 5322  df-res 5323  df-ima 5324  df-pred 5893  df-ord 5939  df-on 5940  df-lim 5941  df-suc 5942  df-iota 6064  df-fun 6103  df-fn 6104  df-f 6105  df-f1 6106  df-fo 6107  df-f1o 6108  df-fv 6109  df-riota 6835  df-ov 6877  df-oprab 6878  df-mpt2 6879  df-om 7296  df-2nd 7399  df-wrecs 7642  df-recs 7704  df-rdg 7742  df-er 7979  df-en 8193  df-dom 8194  df-sdom 8195  df-pnf 10361  df-mnf 10362  df-xr 10363  df-ltxr 10364  df-le 10365  df-sub 10553  df-neg 10554  df-nn 11306  df-2 11364  df-n0 11560  df-z 11644  df-uz 11905  df-seq 13025  df-trcl 13951  df-relexp 13984
This theorem is referenced by:  dffrege76  38733
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