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Theorem grilcbri2 48817
Description: Implications of two graphs being locally isomorphic. (Contributed by AV, 9-Jun-2025.)
Hypotheses
Ref Expression
dfgrlic2.v 𝑉 = (Vtx‘𝐺)
dfgrlic2.w 𝑊 = (Vtx‘𝐻)
dfgrlic3.i 𝐼 = (iEdg‘𝐺)
dfgrlic3.j 𝐽 = (iEdg‘𝐻)
grilcbri2.n 𝑁 = (𝐺 ClNeighbVtx 𝑋)
grilcbri2.m 𝑀 = (𝐻 ClNeighbVtx (𝑓𝑋))
grilcbri2.k 𝐾 = {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ 𝑁}
grilcbri2.l 𝐿 = {𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ 𝑀}
Assertion
Ref Expression
grilcbri2 (𝐺𝑙𝑔𝑟 𝐻 → ∃𝑓(𝑓:𝑉1-1-onto𝑊 ∧ (𝑋𝑉 → ∃𝑗(𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))))))
Distinct variable groups:   𝑓,𝐺   𝑓,𝐻   𝑓,𝑋   𝑔,𝐺,𝑖,𝑗,𝑓   𝑥,𝐺   𝑔,𝐻,𝑖,𝑗   𝑥,𝐻   𝑖,𝐼,𝑥   𝑖,𝐽,𝑥   𝑖,𝐾   𝑔,𝑋,𝑗   𝑥,𝑋,𝑓
Allowed substitution hints:   𝐼(𝑓, 𝑔, 𝑗)   𝐽(𝑓, 𝑔, 𝑗)   𝐾(𝑥, 𝑓, 𝑔, 𝑗)   𝐿(𝑥, 𝑓, 𝑔, 𝑖, 𝑗)   𝑀(𝑥, 𝑓, 𝑔, 𝑖, 𝑗)   𝑁(𝑥, 𝑓, 𝑔, 𝑖, 𝑗)   𝑉(𝑥, 𝑓, 𝑔, 𝑖, 𝑗)   𝑊(𝑥, 𝑓, 𝑔, 𝑖, 𝑗)   𝑋(𝑖)

Proof of Theorem grilcbri2
Dummy variable 𝑣 is distinct from all other variables.
StepHypRef Expression
1 brgrlic 48810 . . 3 (𝐺𝑙𝑔𝑟 𝐻 ↔ (𝐺 GraphLocIso 𝐻) ≠ ∅)
2 grlimdmrel 48786 . . . . 5 Rel dom GraphLocIso
32ovprc 7461 . . . 4 (¬ (𝐺 ∈ V ∧ 𝐻 ∈ V) → (𝐺 GraphLocIso 𝐻) = ∅)
43necon1ai 2988 . . 3 ((𝐺 GraphLocIso 𝐻) ≠ ∅ → (𝐺 ∈ V ∧ 𝐻 ∈ V))
51, 4sylbi 220 . 2 (𝐺𝑙𝑔𝑟 𝐻 → (𝐺 ∈ V ∧ 𝐻 ∈ V))
6 dfgrlic2.v . . . 4 𝑉 = (Vtx‘𝐺)
7 dfgrlic2.w . . . 4 𝑊 = (Vtx‘𝐻)
8 dfgrlic3.i . . . 4 𝐼 = (iEdg‘𝐺)
9 dfgrlic3.j . . . 4 𝐽 = (iEdg‘𝐻)
10 eqid 2766 . . . 4 (𝐺 ClNeighbVtx 𝑣) = (𝐺 ClNeighbVtx 𝑣)
11 eqid 2766 . . . 4 (𝐻 ClNeighbVtx (𝑓𝑣)) = (𝐻 ClNeighbVtx (𝑓𝑣))
12 eqid 2766 . . . 4 {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} = {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}
13 eqid 2766 . . . 4 {𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} = {𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))}
146, 7, 8, 9, 10, 11, 12, 13dfgrlic3 48816 . . 3 ((𝐺 ∈ V ∧ 𝐻 ∈ V) → (𝐺𝑙𝑔𝑟 𝐻 ↔ ∃𝑓(𝑓:𝑉1-1-onto𝑊 ∧ ∀𝑣𝑉𝑗(𝑗:(𝐺 ClNeighbVtx 𝑣)–1-1-onto→(𝐻 ClNeighbVtx (𝑓𝑣)) ∧ ∃𝑔(𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))))))
15 eqidd 2767 . . . . . . . . . . 11 (𝑣 = 𝑋𝑗 = 𝑗)
16 oveq2 7431 . . . . . . . . . . . 12 (𝑣 = 𝑋 → (𝐺 ClNeighbVtx 𝑣) = (𝐺 ClNeighbVtx 𝑋))
17 grilcbri2.n . . . . . . . . . . . 12 𝑁 = (𝐺 ClNeighbVtx 𝑋)
1816, 17eqtr4di 2819 . . . . . . . . . . 11 (𝑣 = 𝑋 → (𝐺 ClNeighbVtx 𝑣) = 𝑁)
19 fveq2 6888 . . . . . . . . . . . . 13 (𝑣 = 𝑋 → (𝑓𝑣) = (𝑓𝑋))
2019oveq2d 7439 . . . . . . . . . . . 12 (𝑣 = 𝑋 → (𝐻 ClNeighbVtx (𝑓𝑣)) = (𝐻 ClNeighbVtx (𝑓𝑋)))
21 grilcbri2.m . . . . . . . . . . . 12 𝑀 = (𝐻 ClNeighbVtx (𝑓𝑋))
2220, 21eqtr4di 2819 . . . . . . . . . . 11 (𝑣 = 𝑋 → (𝐻 ClNeighbVtx (𝑓𝑣)) = 𝑀)
2315, 18, 22f1oeq123d 6821 . . . . . . . . . 10 (𝑣 = 𝑋 → (𝑗:(𝐺 ClNeighbVtx 𝑣)–1-1-onto→(𝐻 ClNeighbVtx (𝑓𝑣)) ↔ 𝑗:𝑁1-1-onto𝑀))
24 eqidd 2767 . . . . . . . . . . . . 13 (𝑣 = 𝑋𝑔 = 𝑔)
2518sseq2d 3972 . . . . . . . . . . . . . . 15 (𝑣 = 𝑋 → ((𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣) ↔ (𝐼𝑥) ⊆ 𝑁))
2625rabbidv 3426 . . . . . . . . . . . . . 14 (𝑣 = 𝑋 → {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} = {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ 𝑁})
27 grilcbri2.k . . . . . . . . . . . . . 14 𝐾 = {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ 𝑁}
2826, 27eqtr4di 2819 . . . . . . . . . . . . 13 (𝑣 = 𝑋 → {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} = 𝐾)
2922sseq2d 3972 . . . . . . . . . . . . . . 15 (𝑣 = 𝑋 → ((𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣)) ↔ (𝐽𝑥) ⊆ 𝑀))
3029rabbidv 3426 . . . . . . . . . . . . . 14 (𝑣 = 𝑋 → {𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} = {𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ 𝑀})
31 grilcbri2.l . . . . . . . . . . . . . 14 𝐿 = {𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ 𝑀}
3230, 31eqtr4di 2819 . . . . . . . . . . . . 13 (𝑣 = 𝑋 → {𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} = 𝐿)
3324, 28, 32f1oeq123d 6821 . . . . . . . . . . . 12 (𝑣 = 𝑋 → (𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ↔ 𝑔:𝐾1-1-onto𝐿))
3428raleqdv 3326 . . . . . . . . . . . 12 (𝑣 = 𝑋 → (∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)) ↔ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))
3533, 34anbi12d 644 . . . . . . . . . . 11 (𝑣 = 𝑋 → ((𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))) ↔ (𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))))
3635exbidv 1954 . . . . . . . . . 10 (𝑣 = 𝑋 → (∃𝑔(𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))) ↔ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))))
3723, 36anbi12d 644 . . . . . . . . 9 (𝑣 = 𝑋 → ((𝑗:(𝐺 ClNeighbVtx 𝑣)–1-1-onto→(𝐻 ClNeighbVtx (𝑓𝑣)) ∧ ∃𝑔(𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))) ↔ (𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))))
3837exbidv 1954 . . . . . . . 8 (𝑣 = 𝑋 → (∃𝑗(𝑗:(𝐺 ClNeighbVtx 𝑣)–1-1-onto→(𝐻 ClNeighbVtx (𝑓𝑣)) ∧ ∃𝑔(𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))) ↔ ∃𝑗(𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))))
3938rspcv 3580 . . . . . . 7 (𝑋𝑉 → (∀𝑣𝑉𝑗(𝑗:(𝐺 ClNeighbVtx 𝑣)–1-1-onto→(𝐻 ClNeighbVtx (𝑓𝑣)) ∧ ∃𝑔(𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))) → ∃𝑗(𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))))
4039com12 33 . . . . . 6 (∀𝑣𝑉𝑗(𝑗:(𝐺 ClNeighbVtx 𝑣)–1-1-onto→(𝐻 ClNeighbVtx (𝑓𝑣)) ∧ ∃𝑔(𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))) → (𝑋𝑉 → ∃𝑗(𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))))
4140a1i 11 . . . . 5 ((𝐺 ∈ V ∧ 𝐻 ∈ V) → (∀𝑣𝑉𝑗(𝑗:(𝐺 ClNeighbVtx 𝑣)–1-1-onto→(𝐻 ClNeighbVtx (𝑓𝑣)) ∧ ∃𝑔(𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))) → (𝑋𝑉 → ∃𝑗(𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))))))
4241anim2d 624 . . . 4 ((𝐺 ∈ V ∧ 𝐻 ∈ V) → ((𝑓:𝑉1-1-onto𝑊 ∧ ∀𝑣𝑉𝑗(𝑗:(𝐺 ClNeighbVtx 𝑣)–1-1-onto→(𝐻 ClNeighbVtx (𝑓𝑣)) ∧ ∃𝑔(𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))) → (𝑓:𝑉1-1-onto𝑊 ∧ (𝑋𝑉 → ∃𝑗(𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))))))
4342eximdv 1950 . . 3 ((𝐺 ∈ V ∧ 𝐻 ∈ V) → (∃𝑓(𝑓:𝑉1-1-onto𝑊 ∧ ∀𝑣𝑉𝑗(𝑗:(𝐺 ClNeighbVtx 𝑣)–1-1-onto→(𝐻 ClNeighbVtx (𝑓𝑣)) ∧ ∃𝑔(𝑔:{𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)}–1-1-onto→{𝑥 ∈ dom 𝐽 ∣ (𝐽𝑥) ⊆ (𝐻 ClNeighbVtx (𝑓𝑣))} ∧ ∀𝑖 ∈ {𝑥 ∈ dom 𝐼 ∣ (𝐼𝑥) ⊆ (𝐺 ClNeighbVtx 𝑣)} (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))) → ∃𝑓(𝑓:𝑉1-1-onto𝑊 ∧ (𝑋𝑉 → ∃𝑗(𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))))))
4414, 43sylbid 243 . 2 ((𝐺 ∈ V ∧ 𝐻 ∈ V) → (𝐺𝑙𝑔𝑟 𝐻 → ∃𝑓(𝑓:𝑉1-1-onto𝑊 ∧ (𝑋𝑉 → ∃𝑗(𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖))))))))
455, 44mpcom 39 1 (𝐺𝑙𝑔𝑟 𝐻 → ∃𝑓(𝑓:𝑉1-1-onto𝑊 ∧ (𝑋𝑉 → ∃𝑗(𝑗:𝑁1-1-onto𝑀 ∧ ∃𝑔(𝑔:𝐾1-1-onto𝐿 ∧ ∀𝑖𝐾 (𝑗 “ (𝐼𝑖)) = (𝐽‘(𝑔𝑖)))))))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wa 401   = wceq 1570  wex 1812  wcel 2146  wne 2961  wral 3082  {crab 3419  Vcvv 3458  wss 3908  c0 4289   class class class wbr 5114  dom cdm 5666  cima 5669  1-1-ontowf1o 6542  cfv 6543  (class class class)co 7423  Vtxcvtx 29383  iEdgciedg 29384   ClNeighbVtx cclnbgr 48624   GraphLocIso cgrlim 48782  𝑙𝑔𝑟 cgrlic 48783
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2195  ax-12 2216  ax-ext 2738  ax-sep 5262  ax-nul 5274  ax-pow 5341  ax-pr 5409  ax-un 7745
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2570  df-eu 2600  df-clab 2745  df-cleq 2758  df-clel 2841  df-nfc 2915  df-ne 2962  df-ral 3083  df-rex 3093  df-rab 3420  df-v 3460  df-sbc 3748  df-csb 3857  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-nul 4290  df-if 4493  df-pw 4569  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4878  df-iun 4963  df-br 5115  df-opab 5179  df-mpt 5198  df-id 5561  df-xp 5672  df-rel 5673  df-cnv 5674  df-co 5675  df-dm 5676  df-rn 5677  df-res 5678  df-ima 5679  df-suc 6373  df-iota 6499  df-fun 6545  df-fn 6546  df-f 6547  df-f1 6548  df-fo 6549  df-f1o 6550  df-fv 6551  df-ov 7426  df-oprab 7427  df-mpo 7428  df-1st 7995  df-2nd 7996  df-1o 8462  df-map 8835  df-vtx 29385  df-iedg 29386  df-clnbgr 48625  df-isubgr 48667  df-grim 48684  df-gric 48687  df-grlim 48784  df-grlic 48787
This theorem is used by: (None)
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