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| Mirrors > Home > MPE Home > Th. List > Mathboxes > sprsymrelen | Structured version Visualization version GIF version | ||
| Description: The class 𝑃 of subsets of the set of pairs over a fixed set 𝑉 and the class 𝑅 of symmetric relations on the fixed set 𝑉 are equinumerous. (Contributed by AV, 27-Nov-2021.) |
| Ref | Expression |
|---|---|
| sprsymrelf.p | ⊢ 𝑃 = 𝒫 (Pairs‘𝑉) |
| sprsymrelf.r | ⊢ 𝑅 = {𝑟 ∈ 𝒫 (𝑉 × 𝑉) ∣ ∀𝑥 ∈ 𝑉 ∀𝑦 ∈ 𝑉 (𝑥𝑟𝑦 ↔ 𝑦𝑟𝑥)} |
| Ref | Expression |
|---|---|
| sprsymrelen | ⊢ (𝑉 ∈ 𝑊 → 𝑃 ≈ 𝑅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sprsymrelf.p | . . 3 ⊢ 𝑃 = 𝒫 (Pairs‘𝑉) | |
| 2 | sprsymrelf.r | . . 3 ⊢ 𝑅 = {𝑟 ∈ 𝒫 (𝑉 × 𝑉) ∣ ∀𝑥 ∈ 𝑉 ∀𝑦 ∈ 𝑉 (𝑥𝑟𝑦 ↔ 𝑦𝑟𝑥)} | |
| 3 | 1, 2 | sprbisymrel 47504 | . 2 ⊢ (𝑉 ∈ 𝑊 → ∃𝑓 𝑓:𝑃–1-1-onto→𝑅) |
| 4 | bren 8931 | . 2 ⊢ (𝑃 ≈ 𝑅 ↔ ∃𝑓 𝑓:𝑃–1-1-onto→𝑅) | |
| 5 | 3, 4 | sylibr 234 | 1 ⊢ (𝑉 ∈ 𝑊 → 𝑃 ≈ 𝑅) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1540 ∃wex 1779 ∈ wcel 2109 ∀wral 3045 {crab 3408 𝒫 cpw 4566 class class class wbr 5110 × cxp 5639 –1-1-onto→wf1o 6513 ‘cfv 6514 ≈ cen 8918 Pairscspr 47482 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-id 5536 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-en 8922 df-spr 47483 |
| This theorem is referenced by: uspgrymrelen 48145 |
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