| Mathbox for Peter Mazsa |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > elec1cnvres | Structured version Visualization version GIF version | ||
| Description: Elementhood in the converse restricted coset of 𝐵. (Contributed by Peter Mazsa, 21-Sep-2018.) |
| Ref | Expression |
|---|---|
| elec1cnvres | ⊢ (𝐵 ∈ 𝑉 → (𝐶 ∈ [𝐵]◡(𝑅 ↾ 𝐴) ↔ (𝐶 ∈ 𝐴 ∧ 𝐶𝑅𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relcnv 6105 | . . 3 ⊢ Rel ◡(𝑅 ↾ 𝐴) | |
| 2 | relelec 8740 | . . 3 ⊢ (Rel ◡(𝑅 ↾ 𝐴) → (𝐶 ∈ [𝐵]◡(𝑅 ↾ 𝐴) ↔ 𝐵◡(𝑅 ↾ 𝐴)𝐶)) | |
| 3 | 1, 2 | ax-mp 5 | . 2 ⊢ (𝐶 ∈ [𝐵]◡(𝑅 ↾ 𝐴) ↔ 𝐵◡(𝑅 ↾ 𝐴)𝐶) |
| 4 | br1cnvres 38951 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐵◡(𝑅 ↾ 𝐴)𝐶 ↔ (𝐶 ∈ 𝐴 ∧ 𝐶𝑅𝐵))) | |
| 5 | 3, 4 | bitrid 286 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐶 ∈ [𝐵]◡(𝑅 ↾ 𝐴) ↔ (𝐶 ∈ 𝐴 ∧ 𝐶𝑅𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 400 ∈ wcel 2142 class class class wbr 5108 ◡ccnv 5659 ↾ cres 5662 Rel wrel 5665 [cec 8690 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-ext 2734 ax-sep 5256 ax-pr 5403 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-ral 3079 df-rex 3089 df-rab 3416 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-sn 4589 df-pr 4591 df-op 4595 df-br 5109 df-opab 5173 df-xp 5666 df-rel 5667 df-cnv 5668 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-ec 8694 |
| This theorem is used by: ec1cnvres 38953 |
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