| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > harval | Structured version Visualization version GIF version | ||
| Description: Function value of the Hartogs function. (Contributed by Stefan O'Rear, 11-Feb-2015.) |
| Ref | Expression |
|---|---|
| harval | ⊢ (𝑋 ∈ 𝑉 → (har‘𝑋) = {𝑦 ∈ On ∣ 𝑦 ≼ 𝑋}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elex 3461 | . 2 ⊢ (𝑋 ∈ 𝑉 → 𝑋 ∈ V) | |
| 2 | breq2 5102 | . . . 4 ⊢ (𝑥 = 𝑋 → (𝑦 ≼ 𝑥 ↔ 𝑦 ≼ 𝑋)) | |
| 3 | 2 | rabbidv 3406 | . . 3 ⊢ (𝑥 = 𝑋 → {𝑦 ∈ On ∣ 𝑦 ≼ 𝑥} = {𝑦 ∈ On ∣ 𝑦 ≼ 𝑋}) |
| 4 | df-har 9462 | . . 3 ⊢ har = (𝑥 ∈ V ↦ {𝑦 ∈ On ∣ 𝑦 ≼ 𝑥}) | |
| 5 | hartogs 9449 | . . 3 ⊢ (𝑥 ∈ V → {𝑦 ∈ On ∣ 𝑦 ≼ 𝑥} ∈ On) | |
| 6 | 3, 4, 5 | fvmpt3 6945 | . 2 ⊢ (𝑋 ∈ V → (har‘𝑋) = {𝑦 ∈ On ∣ 𝑦 ≼ 𝑋}) |
| 7 | 1, 6 | syl 17 | 1 ⊢ (𝑋 ∈ 𝑉 → (har‘𝑋) = {𝑦 ∈ On ∣ 𝑦 ≼ 𝑋}) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2113 {crab 3399 Vcvv 3440 class class class wbr 5098 Oncon0 6317 ‘cfv 6492 ≼ cdom 8881 harchar 9461 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rmo 3350 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-se 5578 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-isom 6501 df-riota 7315 df-ov 7361 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-en 8884 df-dom 8885 df-oi 9415 df-har 9462 |
| This theorem is referenced by: elharval 9466 harword 9468 harwdom 9496 harval2 9909 |
| Copyright terms: Public domain | W3C validator |