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Mirrors > Home > MPE Home > Th. List > f1otrgds | Structured version Visualization version GIF version |
Description: Convenient lemma for f1otrg 25551. (Contributed by Thierry Arnoux, 19-Mar-2019.) |
Ref | Expression |
---|---|
f1otrkg.p | ⊢ 𝑃 = (Base‘𝐺) |
f1otrkg.d | ⊢ 𝐷 = (dist‘𝐺) |
f1otrkg.i | ⊢ 𝐼 = (Itv‘𝐺) |
f1otrkg.b | ⊢ 𝐵 = (Base‘𝐻) |
f1otrkg.e | ⊢ 𝐸 = (dist‘𝐻) |
f1otrkg.j | ⊢ 𝐽 = (Itv‘𝐻) |
f1otrkg.f | ⊢ (𝜑 → 𝐹:𝐵–1-1-onto→𝑃) |
f1otrkg.1 | ⊢ ((𝜑 ∧ (𝑒 ∈ 𝐵 ∧ 𝑓 ∈ 𝐵)) → (𝑒𝐸𝑓) = ((𝐹‘𝑒)𝐷(𝐹‘𝑓))) |
f1otrkg.2 | ⊢ ((𝜑 ∧ (𝑒 ∈ 𝐵 ∧ 𝑓 ∈ 𝐵 ∧ 𝑔 ∈ 𝐵)) → (𝑔 ∈ (𝑒𝐽𝑓) ↔ (𝐹‘𝑔) ∈ ((𝐹‘𝑒)𝐼(𝐹‘𝑓)))) |
f1otrgitv.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
f1otrgitv.y | ⊢ (𝜑 → 𝑌 ∈ 𝐵) |
Ref | Expression |
---|---|
f1otrgds | ⊢ (𝜑 → (𝑋𝐸𝑌) = ((𝐹‘𝑋)𝐷(𝐹‘𝑌))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1otrkg.1 | . . 3 ⊢ ((𝜑 ∧ (𝑒 ∈ 𝐵 ∧ 𝑓 ∈ 𝐵)) → (𝑒𝐸𝑓) = ((𝐹‘𝑒)𝐷(𝐹‘𝑓))) | |
2 | 1 | ralrimivva 2954 | . 2 ⊢ (𝜑 → ∀𝑒 ∈ 𝐵 ∀𝑓 ∈ 𝐵 (𝑒𝐸𝑓) = ((𝐹‘𝑒)𝐷(𝐹‘𝑓))) |
3 | f1otrgitv.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
4 | f1otrgitv.y | . . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵) | |
5 | oveq1 6556 | . . . . 5 ⊢ (𝑒 = 𝑋 → (𝑒𝐸𝑓) = (𝑋𝐸𝑓)) | |
6 | fveq2 6103 | . . . . . 6 ⊢ (𝑒 = 𝑋 → (𝐹‘𝑒) = (𝐹‘𝑋)) | |
7 | 6 | oveq1d 6564 | . . . . 5 ⊢ (𝑒 = 𝑋 → ((𝐹‘𝑒)𝐷(𝐹‘𝑓)) = ((𝐹‘𝑋)𝐷(𝐹‘𝑓))) |
8 | 5, 7 | eqeq12d 2625 | . . . 4 ⊢ (𝑒 = 𝑋 → ((𝑒𝐸𝑓) = ((𝐹‘𝑒)𝐷(𝐹‘𝑓)) ↔ (𝑋𝐸𝑓) = ((𝐹‘𝑋)𝐷(𝐹‘𝑓)))) |
9 | oveq2 6557 | . . . . 5 ⊢ (𝑓 = 𝑌 → (𝑋𝐸𝑓) = (𝑋𝐸𝑌)) | |
10 | fveq2 6103 | . . . . . 6 ⊢ (𝑓 = 𝑌 → (𝐹‘𝑓) = (𝐹‘𝑌)) | |
11 | 10 | oveq2d 6565 | . . . . 5 ⊢ (𝑓 = 𝑌 → ((𝐹‘𝑋)𝐷(𝐹‘𝑓)) = ((𝐹‘𝑋)𝐷(𝐹‘𝑌))) |
12 | 9, 11 | eqeq12d 2625 | . . . 4 ⊢ (𝑓 = 𝑌 → ((𝑋𝐸𝑓) = ((𝐹‘𝑋)𝐷(𝐹‘𝑓)) ↔ (𝑋𝐸𝑌) = ((𝐹‘𝑋)𝐷(𝐹‘𝑌)))) |
13 | 8, 12 | rspc2v 3293 | . . 3 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (∀𝑒 ∈ 𝐵 ∀𝑓 ∈ 𝐵 (𝑒𝐸𝑓) = ((𝐹‘𝑒)𝐷(𝐹‘𝑓)) → (𝑋𝐸𝑌) = ((𝐹‘𝑋)𝐷(𝐹‘𝑌)))) |
14 | 3, 4, 13 | syl2anc 691 | . 2 ⊢ (𝜑 → (∀𝑒 ∈ 𝐵 ∀𝑓 ∈ 𝐵 (𝑒𝐸𝑓) = ((𝐹‘𝑒)𝐷(𝐹‘𝑓)) → (𝑋𝐸𝑌) = ((𝐹‘𝑋)𝐷(𝐹‘𝑌)))) |
15 | 2, 14 | mpd 15 | 1 ⊢ (𝜑 → (𝑋𝐸𝑌) = ((𝐹‘𝑋)𝐷(𝐹‘𝑌))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 ∧ w3a 1031 = wceq 1475 ∈ wcel 1977 ∀wral 2896 –1-1-onto→wf1o 5803 ‘cfv 5804 (class class class)co 6549 Basecbs 15695 distcds 15777 Itvcitv 25135 |
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-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-iota 5768 df-fv 5812 df-ov 6552 |
This theorem is referenced by: f1otrg 25551 |
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