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Related theorems GIF version |
| Description: Functionality of a projection. |
| Ref | Expression |
|---|---|
| pjfn.1 | ⊢ H ∈ Cℋ |
| Ref | Expression |
|---|---|
| pjfn | ⊢ (Proj ‘H) Fn ℋ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pjfn.1 | . . . . 5 ⊢ H ∈ Cℋ | |
| 2 | 1 | elisseti 1355 | . . . 4 ⊢ H ∈ V |
| 3 | 2 | rabex 1706 | . . 3 ⊢ {z ∈ H∣∃w ∈ (⊥ ‘H)x = (z +v w)} ∈ V |
| 4 | 3 | uniex 1947 | . 2 ⊢ ∪{z ∈ H∣∃w ∈ (⊥ ‘H)x = (z +v w)} ∈ V |
| 5 | pjmvalt 5245 | . . 3 ⊢ (H ∈ Cℋ → (Proj ‘H) = {〈x, y〉∣(x ∈ ℋ ∧ y = ∪{z ∈ H∣∃w ∈ (⊥ ‘H)x = (z +v w)})}) | |
| 6 | 1, 5 | ax-mp 6 | . 2 ⊢ (Proj ‘H) = {〈x, y〉∣(x ∈ ℋ ∧ y = ∪{z ∈ H∣∃w ∈ (⊥ ‘H)x = (z +v w)})} |
| 7 | 4, 6 | fnopab2 2747 | 1 ⊢ (Proj ‘H) Fn ℋ |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 196 = wceq 1091 ∈ wcel 1092 ∃wrex 1202 {crab 1204 ∪cuni 1919 {copab 2055 Fn wfn 2417 ‘cfv 2422 (class class class)co 3001 ℋ chil 4958 +v cva 4959 Cℋ cch 4968 ⊥cort 4969 Projcpj 4976 |
| This theorem is referenced by: pjrn 5587 pjf 5588 pjoi0 5592 ho0 5612 ho1 5613 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-un 1076 ax-pow 1077 ax-hilex 4983 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-ral 1205 df-rex 1206 df-rab 1208 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-br 2063 df-opab 2098 df-id 2125 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fn 2433 df-fv 2438 df-pj 5244 |