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| Mirrors > Home > HSE Home > Th. List > pjmfn | Structured version Visualization version GIF version | ||
| Description: Functionality of the projection function. (Contributed by NM, 24-Apr-2006.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| pjmfn | ⊢ projℎ Fn Cℋ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-hilex 31480 | . . 3 ⊢ ℋ ∈ V | |
| 2 | 1 | mptex 7222 | . 2 ⊢ (𝑥 ∈ ℋ ↦ (℩𝑧 ∈ ℎ ∃𝑦 ∈ (⊥‘ℎ)𝑥 = (𝑧 +ℎ 𝑦))) ∈ V |
| 3 | df-pjh 31876 | . 2 ⊢ projℎ = (ℎ ∈ Cℋ ↦ (𝑥 ∈ ℋ ↦ (℩𝑧 ∈ ℎ ∃𝑦 ∈ (⊥‘ℎ)𝑥 = (𝑧 +ℎ 𝑦)))) | |
| 4 | 2, 3 | fnmpti 6675 | 1 ⊢ projℎ Fn Cℋ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∃wrex 3086 ↦ cmpt 5186 Fn wfn 6528 ‘cfv 6533 ℩crio 7369 (class class class)co 7413 ℋchba 31400 +ℎ cva 31401 Cℋ cch 31410 ⊥cort 31411 projℎcpjh 31418 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pr 5398 ax-hilex 31480 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-pjh 31876 |
| This theorem is used by: pjmf1 32197 pjssdif1i 32656 dfpjop 32663 pjadj3 32669 pjcmul1i 32682 pjcmul2i 32683 |
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