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Mirrors > Home > MPE Home > Th. List > Mathboxes > extssr | Structured version Visualization version GIF version |
Description: Property of subset relation, see also extid 38266, extep 38239 and the comment of df-ssr 38454. (Contributed by Peter Mazsa, 10-Jul-2019.) |
Ref | Expression |
---|---|
extssr | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ([𝐴]◡ S = [𝐵]◡ S ↔ 𝐴 = 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | brssr 38457 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → (𝑥 S 𝐴 ↔ 𝑥 ⊆ 𝐴)) | |
2 | brssr 38457 | . . . 4 ⊢ (𝐵 ∈ 𝑊 → (𝑥 S 𝐵 ↔ 𝑥 ⊆ 𝐵)) | |
3 | 1, 2 | bi2bian9 639 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ((𝑥 S 𝐴 ↔ 𝑥 S 𝐵) ↔ (𝑥 ⊆ 𝐴 ↔ 𝑥 ⊆ 𝐵))) |
4 | 3 | albidv 1919 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (∀𝑥(𝑥 S 𝐴 ↔ 𝑥 S 𝐵) ↔ ∀𝑥(𝑥 ⊆ 𝐴 ↔ 𝑥 ⊆ 𝐵))) |
5 | relssr 38456 | . . 3 ⊢ Rel S | |
6 | releccnveq 38214 | . . 3 ⊢ ((Rel S ∧ Rel S ) → ([𝐴]◡ S = [𝐵]◡ S ↔ ∀𝑥(𝑥 S 𝐴 ↔ 𝑥 S 𝐵))) | |
7 | 5, 5, 6 | mp2an 691 | . 2 ⊢ ([𝐴]◡ S = [𝐵]◡ S ↔ ∀𝑥(𝑥 S 𝐴 ↔ 𝑥 S 𝐵)) |
8 | ssext 5474 | . 2 ⊢ (𝐴 = 𝐵 ↔ ∀𝑥(𝑥 ⊆ 𝐴 ↔ 𝑥 ⊆ 𝐵)) | |
9 | 4, 7, 8 | 3bitr4g 314 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ([𝐴]◡ S = [𝐵]◡ S ↔ 𝐴 = 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∀wal 1535 = wceq 1537 ∈ wcel 2108 ⊆ wss 3976 class class class wbr 5166 ◡ccnv 5699 Rel wrel 5705 [cec 8761 S cssr 38138 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pr 5447 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-clab 2718 df-cleq 2732 df-clel 2819 df-ral 3068 df-rex 3077 df-rab 3444 df-v 3490 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-br 5167 df-opab 5229 df-xp 5706 df-rel 5707 df-cnv 5708 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-ec 8765 df-ssr 38454 |
This theorem is referenced by: (None) |
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