| 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 6111 | . . 3 ⊢ Rel ◡(𝑅 ↾ 𝐴) | |
| 2 | relelec 8751 | . . 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 38956 | . 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 401 ∈ wcel 2146 class class class wbr 5114 ◡ccnv 5665 ↾ cres 5668 Rel wrel 5671 [cec 8701 |
| 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-ext 2738 ax-sep 5262 ax-pr 5409 |
| 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-sb 2100 df-clab 2745 df-cleq 2758 df-clel 2841 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-br 5115 df-opab 5179 df-xp 5672 df-rel 5673 df-cnv 5674 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-ec 8705 |
| This theorem is used by: ec1cnvres 38958 |
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