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Theorem mgcmntco 33555
Description: A Galois connection like statement, for two functions with same range. (Contributed by Thierry Arnoux, 26-Apr-2024.)
Hypotheses
Ref Expression
mgcoval.1 𝐴 = (Base‘𝑉)
mgcoval.2 𝐵 = (Base‘𝑊)
mgcoval.3 ≤ = (le‘𝑉)
mgcoval.4 ≲ = (le‘𝑊)
mgcval.1 𝐻 = (𝑉MGalConn𝑊)
mgcval.2 (𝜑 → 𝑉 ∈ Proset )
mgcval.3 (𝜑 → 𝑊 ∈ Proset )
mgccole.1 (𝜑 → 𝐹𝐻𝐺)
mgcmntco.1 𝐶 = (Base‘𝑋)
mgcmntco.2 < = (le‘𝑋)
mgcmntco.3 (𝜑 → 𝑋 ∈ Proset )
mgcmntco.4 (𝜑 → 𝐾 ∈ (𝑉Monot𝑋))
mgcmntco.5 (𝜑 → 𝐿 ∈ (𝑊Monot𝑋))
Assertion
Ref Expression
mgcmntco (𝜑 → (∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥)) ↔ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)))
Distinct variable groups:   𝑥,𝐴,𝑦   𝑥,𝐵,𝑦   𝑥,𝑉,𝑦   𝑥,𝑊,𝑦   𝑥,𝑋,𝑦   𝑥,𝐹,𝑦   𝑥,𝐺,𝑦   𝑥, < ,𝑦   𝑥,𝐾,𝑦   𝑥,𝐿,𝑦   𝜑,𝑥,𝑦
Allowed substitution hints:   𝐶(𝑥, 𝑦)   𝐻(𝑥, 𝑦)   ≤ (𝑥, 𝑦)   ≲ (𝑥, 𝑦)

Proof of Theorem mgcmntco
StepHypRef Expression
1 mgcmntco.3 . . . . 5 (𝜑 → 𝑋 ∈ Proset )
21ad2antrr 739 . . . 4 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → 𝑋 ∈ Proset )
3 mgcval.2 . . . . . . 7 (𝜑 → 𝑉 ∈ Proset )
4 mgcmntco.4 . . . . . . 7 (𝜑 → 𝐾 ∈ (𝑉Monot𝑋))
5 mgcoval.1 . . . . . . . 8 𝐴 = (Base‘𝑉)
6 mgcmntco.1 . . . . . . . 8 𝐶 = (Base‘𝑋)
75, 6mntf 33546 . . . . . . 7 ((𝑉 ∈ Proset ∧ 𝑋 ∈ Proset ∧ 𝐾 ∈ (𝑉Monot𝑋)) → 𝐾:𝐴⟶𝐶)
83, 1, 4, 7syl3anc 1398 . . . . . 6 (𝜑 → 𝐾:𝐴⟶𝐶)
98ad2antrr 739 . . . . 5 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → 𝐾:𝐴⟶𝐶)
10 mgcoval.2 . . . . . . . 8 𝐵 = (Base‘𝑊)
11 mgcoval.3 . . . . . . . 8 ≤ = (le‘𝑉)
12 mgcoval.4 . . . . . . . 8 ≲ = (le‘𝑊)
13 mgcval.1 . . . . . . . 8 𝐻 = (𝑉MGalConn𝑊)
14 mgcval.3 . . . . . . . 8 (𝜑 → 𝑊 ∈ Proset )
15 mgccole.1 . . . . . . . 8 (𝜑 → 𝐹𝐻𝐺)
165, 10, 11, 12, 13, 3, 14, 15mgcf2 33550 . . . . . . 7 (𝜑 → 𝐺:𝐵⟶𝐴)
1716adantr 486 . . . . . 6 ((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) → 𝐺:𝐵⟶𝐴)
1817ffvelcdmda 7084 . . . . 5 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → (𝐺‘𝑦) ∈ 𝐴)
199, 18ffvelcdmd 7085 . . . 4 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → (𝐾‘(𝐺‘𝑦)) ∈ 𝐶)
20 mgcmntco.5 . . . . . . 7 (𝜑 → 𝐿 ∈ (𝑊Monot𝑋))
2110, 6mntf 33546 . . . . . . 7 ((𝑊 ∈ Proset ∧ 𝑋 ∈ Proset ∧ 𝐿 ∈ (𝑊Monot𝑋)) → 𝐿:𝐵⟶𝐶)
2214, 1, 20, 21syl3anc 1398 . . . . . 6 (𝜑 → 𝐿:𝐵⟶𝐶)
2322ad2antrr 739 . . . . 5 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → 𝐿:𝐵⟶𝐶)
245, 10, 11, 12, 13, 3, 14, 15mgcf1 33549 . . . . . . 7 (𝜑 → 𝐹:𝐴⟶𝐵)
2524ad2antrr 739 . . . . . 6 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → 𝐹:𝐴⟶𝐵)
2625, 18ffvelcdmd 7085 . . . . 5 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → (𝐹‘(𝐺‘𝑦)) ∈ 𝐵)
2723, 26ffvelcdmd 7085 . . . 4 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → (𝐿‘(𝐹‘(𝐺‘𝑦))) ∈ 𝐶)
2822adantr 486 . . . . 5 ((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) → 𝐿:𝐵⟶𝐶)
2928ffvelcdmda 7084 . . . 4 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → (𝐿‘𝑦) ∈ 𝐶)
3016ffvelcdmda 7084 . . . . . . 7 ((𝜑 ∧ 𝑦 ∈ 𝐵) → (𝐺‘𝑦) ∈ 𝐴)
31 fveq2 6885 . . . . . . . . 9 (𝑥 = (𝐺‘𝑦) → (𝐾‘𝑥) = (𝐾‘(𝐺‘𝑦)))
32 2fveq3 6890 . . . . . . . . 9 (𝑥 = (𝐺‘𝑦) → (𝐿‘(𝐹‘𝑥)) = (𝐿‘(𝐹‘(𝐺‘𝑦))))
3331, 32breq12d 5116 . . . . . . . 8 (𝑥 = (𝐺‘𝑦) → ((𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥)) ↔ (𝐾‘(𝐺‘𝑦)) < (𝐿‘(𝐹‘(𝐺‘𝑦)))))
3433adantl 487 . . . . . . 7 (((𝜑 ∧ 𝑦 ∈ 𝐵) ∧ 𝑥 = (𝐺‘𝑦)) → ((𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥)) ↔ (𝐾‘(𝐺‘𝑦)) < (𝐿‘(𝐹‘(𝐺‘𝑦)))))
3530, 34rspcdv 3569 . . . . . 6 ((𝜑 ∧ 𝑦 ∈ 𝐵) → (∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥)) → (𝐾‘(𝐺‘𝑦)) < (𝐿‘(𝐹‘(𝐺‘𝑦)))))
3635imp 412 . . . . 5 (((𝜑 ∧ 𝑦 ∈ 𝐵) ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) → (𝐾‘(𝐺‘𝑦)) < (𝐿‘(𝐹‘(𝐺‘𝑦))))
3736an32s 665 . . . 4 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → (𝐾‘(𝐺‘𝑦)) < (𝐿‘(𝐹‘(𝐺‘𝑦))))
38 mgcmntco.2 . . . . 5 < = (le‘𝑋)
3914ad2antrr 739 . . . . 5 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → 𝑊 ∈ Proset )
4020ad2antrr 739 . . . . 5 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → 𝐿 ∈ (𝑊Monot𝑋))
41 simpr 490 . . . . 5 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ 𝐵)
423ad2antrr 739 . . . . . 6 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → 𝑉 ∈ Proset )
4315ad2antrr 739 . . . . . 6 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → 𝐹𝐻𝐺)
445, 10, 11, 12, 13, 42, 39, 43, 41mgccole2 33552 . . . . 5 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → (𝐹‘(𝐺‘𝑦)) ≲ 𝑦)
4510, 6, 12, 38, 39, 2, 40, 26, 41, 44ismntd 33545 . . . 4 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → (𝐿‘(𝐹‘(𝐺‘𝑦))) < (𝐿‘𝑦))
466, 38prstr 18473 . . . 4 ((𝑋 ∈ Proset ∧ ((𝐾‘(𝐺‘𝑦)) ∈ 𝐶 ∧ (𝐿‘(𝐹‘(𝐺‘𝑦))) ∈ 𝐶 ∧ (𝐿‘𝑦) ∈ 𝐶) ∧ ((𝐾‘(𝐺‘𝑦)) < (𝐿‘(𝐹‘(𝐺‘𝑦))) ∧ (𝐿‘(𝐹‘(𝐺‘𝑦))) < (𝐿‘𝑦))) → (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦))
472, 19, 27, 29, 37, 45, 46syl132anc 1415 . . 3 (((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) ∧ 𝑦 ∈ 𝐵) → (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦))
4847ralrimiva 3155 . 2 ((𝜑 ∧ ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥))) → ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦))
491ad2antrr 739 . . . 4 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝑋 ∈ Proset )
508ad2antrr 739 . . . . 5 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝐾:𝐴⟶𝐶)
51 simpr 490 . . . . 5 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐴)
5250, 51ffvelcdmd 7085 . . . 4 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → (𝐾‘𝑥) ∈ 𝐶)
5316ad2antrr 739 . . . . . 6 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝐺:𝐵⟶𝐴)
5424adantr 486 . . . . . . 7 ((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) → 𝐹:𝐴⟶𝐵)
5554ffvelcdmda 7084 . . . . . 6 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) ∈ 𝐵)
5653, 55ffvelcdmd 7085 . . . . 5 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → (𝐺‘(𝐹‘𝑥)) ∈ 𝐴)
5750, 56ffvelcdmd 7085 . . . 4 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → (𝐾‘(𝐺‘(𝐹‘𝑥))) ∈ 𝐶)
5822ad2antrr 739 . . . . 5 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝐿:𝐵⟶𝐶)
5958, 55ffvelcdmd 7085 . . . 4 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → (𝐿‘(𝐹‘𝑥)) ∈ 𝐶)
603ad2antrr 739 . . . . 5 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝑉 ∈ Proset )
614ad2antrr 739 . . . . 5 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝐾 ∈ (𝑉Monot𝑋))
6214ad2antrr 739 . . . . . 6 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝑊 ∈ Proset )
6315ad2antrr 739 . . . . . 6 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝐹𝐻𝐺)
645, 10, 11, 12, 13, 60, 62, 63, 51mgccole1 33551 . . . . 5 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → 𝑥 ≤ (𝐺‘(𝐹‘𝑥)))
655, 6, 11, 38, 60, 49, 61, 51, 56, 64ismntd 33545 . . . 4 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → (𝐾‘𝑥) < (𝐾‘(𝐺‘(𝐹‘𝑥))))
6624ffvelcdmda 7084 . . . . . . 7 ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) ∈ 𝐵)
67 2fveq3 6890 . . . . . . . . 9 (𝑦 = (𝐹‘𝑥) → (𝐾‘(𝐺‘𝑦)) = (𝐾‘(𝐺‘(𝐹‘𝑥))))
68 fveq2 6885 . . . . . . . . 9 (𝑦 = (𝐹‘𝑥) → (𝐿‘𝑦) = (𝐿‘(𝐹‘𝑥)))
6967, 68breq12d 5116 . . . . . . . 8 (𝑦 = (𝐹‘𝑥) → ((𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦) ↔ (𝐾‘(𝐺‘(𝐹‘𝑥))) < (𝐿‘(𝐹‘𝑥))))
7069adantl 487 . . . . . . 7 (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ 𝑦 = (𝐹‘𝑥)) → ((𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦) ↔ (𝐾‘(𝐺‘(𝐹‘𝑥))) < (𝐿‘(𝐹‘𝑥))))
7166, 70rspcdv 3569 . . . . . 6 ((𝜑 ∧ 𝑥 ∈ 𝐴) → (∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦) → (𝐾‘(𝐺‘(𝐹‘𝑥))) < (𝐿‘(𝐹‘𝑥))))
7271imp 412 . . . . 5 (((𝜑 ∧ 𝑥 ∈ 𝐴) ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) → (𝐾‘(𝐺‘(𝐹‘𝑥))) < (𝐿‘(𝐹‘𝑥)))
7372an32s 665 . . . 4 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → (𝐾‘(𝐺‘(𝐹‘𝑥))) < (𝐿‘(𝐹‘𝑥)))
746, 38prstr 18473 . . . 4 ((𝑋 ∈ Proset ∧ ((𝐾‘𝑥) ∈ 𝐶 ∧ (𝐾‘(𝐺‘(𝐹‘𝑥))) ∈ 𝐶 ∧ (𝐿‘(𝐹‘𝑥)) ∈ 𝐶) ∧ ((𝐾‘𝑥) < (𝐾‘(𝐺‘(𝐹‘𝑥))) ∧ (𝐾‘(𝐺‘(𝐹‘𝑥))) < (𝐿‘(𝐹‘𝑥)))) → (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥)))
7549, 52, 57, 59, 65, 73, 74syl132anc 1415 . . 3 (((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) ∧ 𝑥 ∈ 𝐴) → (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥)))
7675ralrimiva 3155 . 2 ((𝜑 ∧ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)) → ∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥)))
7748, 76impbida 813 1 (𝜑 → (∀𝑥 ∈ 𝐴 (𝐾‘𝑥) < (𝐿‘(𝐹‘𝑥)) ↔ ∀𝑦 ∈ 𝐵 (𝐾‘(𝐺‘𝑦)) < (𝐿‘𝑦)))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   = wceq 1570   ∈ wcel 2145  ∀wral 3077   class class class wbr 5103  ⟶wf 6534  ‘cfv 6538  (class class class)co 7420  Basecbs 17387  lecple 17435   Proset cproset 18466  Monotcmnt 33539  MGalConncmgc 33540
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 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-sep 5249  ax-nul 5260  ax-pow 5327  ax-pr 5391  ax-un 7751
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 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-fv 6546  df-ov 7423  df-oprab 7424  df-mpo 7425  df-map 8849  df-proset 18468  df-mnt 33541  df-mgc 33542
This theorem is used by: (None)
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