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| Mirrors > Home > MPE Home > Th. List > mptsuppdifd | Structured version Visualization version GIF version | ||
| Description: The support of a function in maps-to notation with a class difference. (Contributed by AV, 28-May-2019.) |
| Ref | Expression |
|---|---|
| mptsuppdifd.f | ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) |
| mptsuppdifd.a | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| mptsuppdifd.z | ⊢ (𝜑 → 𝑍 ∈ 𝑊) |
| Ref | Expression |
|---|---|
| mptsuppdifd | ⊢ (𝜑 → (𝐹 supp 𝑍) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ (V ∖ {𝑍})}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mptsuppdifd.f | . . . 4 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 2 | mptsuppdifd.a | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 3 | 2 | mptexd 7229 | . . . 4 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ V) |
| 4 | 1, 3 | eqeltrid 2869 | . . 3 ⊢ (𝜑 → 𝐹 ∈ V) |
| 5 | mptsuppdifd.z | . . 3 ⊢ (𝜑 → 𝑍 ∈ 𝑊) | |
| 6 | suppimacnv 8176 | . . 3 ⊢ ((𝐹 ∈ V ∧ 𝑍 ∈ 𝑊) → (𝐹 supp 𝑍) = (◡𝐹 “ (V ∖ {𝑍}))) | |
| 7 | 4, 5, 6 | syl2anc 596 | . 2 ⊢ (𝜑 → (𝐹 supp 𝑍) = (◡𝐹 “ (V ∖ {𝑍}))) |
| 8 | 1 | mptpreima 6241 | . 2 ⊢ (◡𝐹 “ (V ∖ {𝑍})) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ (V ∖ {𝑍})} |
| 9 | 7, 8 | eqtrdi 2816 | 1 ⊢ (𝜑 → (𝐹 supp 𝑍) = {𝑥 ∈ 𝐴 ∣ 𝐵 ∈ (V ∖ {𝑍})}) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2146 {crab 3418 Vcvv 3457 ∖ cdif 3903 {csn 4591 ↦ cmpt 5194 ◡ccnv 5662 “ cima 5666 (class class class)co 7419 supp csupp 8162 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pr 5406 ax-un 7742 |
| 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 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-ov 7422 df-oprab 7423 df-mpo 7424 df-supp 8163 |
| This theorem is used by: mptsuppd 8189 extmptsuppeq 8190 suppssov1 8199 suppssov2 8200 suppss2 8202 suppssfv 8204 |
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