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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fineqvacALT | Structured version Visualization version GIF version | ||
| Description: Shorter proof of fineqvac 35303 using ax-rep 5202 and ax-pow 5297. (Contributed by BTernaryTau, 21-Sep-2024.) (Proof modification is discouraged.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| fineqvacALT | ⊢ (Fin = V → CHOICE) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssv 3942 | . . . 4 ⊢ dom card ⊆ V | |
| 2 | 1 | a1i 11 | . . 3 ⊢ (Fin = V → dom card ⊆ V) |
| 3 | finnum 9866 | . . . . 5 ⊢ (𝑥 ∈ Fin → 𝑥 ∈ dom card) | |
| 4 | 3 | ssriv 3922 | . . . 4 ⊢ Fin ⊆ dom card |
| 5 | sseq1 3943 | . . . 4 ⊢ (Fin = V → (Fin ⊆ dom card ↔ V ⊆ dom card)) | |
| 6 | 4, 5 | mpbii 234 | . . 3 ⊢ (Fin = V → V ⊆ dom card) |
| 7 | 2, 6 | eqssd 3935 | . 2 ⊢ (Fin = V → dom card = V) |
| 8 | dfac10 10054 | . 2 ⊢ (CHOICE ↔ dom card = V) | |
| 9 | 7, 8 | sylibr 235 | 1 ⊢ (Fin = V → CHOICE) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1543 Vcvv 3428 ⊆ wss 3886 dom cdm 5621 Fincfn 8886 cardccrd 9853 CHOICEwac 10031 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1970 ax-7 2011 ax-8 2117 ax-9 2125 ax-10 2148 ax-11 2164 ax-12 2185 ax-ext 2708 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7681 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 850 df-3or 1089 df-3an 1090 df-tru 1546 df-fal 1556 df-ex 1783 df-nf 1787 df-sb 2070 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2932 df-ral 3051 df-rex 3061 df-rmo 3341 df-reu 3342 df-rab 3389 df-v 3430 df-sbc 3727 df-csb 3835 df-dif 3889 df-un 3891 df-in 3893 df-ss 3903 df-pss 3906 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-int 4881 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-se 5575 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6255 df-ord 6316 df-on 6317 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-isom 6497 df-riota 7316 df-ov 7362 df-om 7810 df-2nd 7935 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-er 8636 df-en 8887 df-fin 8890 df-card 9857 df-ac 10032 |
| This theorem is referenced by: (None) |
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