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| Mirrors > Home > ILE Home > Th. List > elpm2r | GIF version | ||
| Description: Sufficient condition for being a partial function. (Contributed by NM, 31-Dec-2013.) |
| Ref | Expression |
|---|---|
| elpm2r | ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) ∧ (𝐹:𝐶⟶𝐴 ∧ 𝐶 ⊆ 𝐵)) → 𝐹 ∈ (𝐴 ↑pm 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fdm 5413 | . . . . . . 7 ⊢ (𝐹:𝐶⟶𝐴 → dom 𝐹 = 𝐶) | |
| 2 | 1 | feq2d 5395 | . . . . . 6 ⊢ (𝐹:𝐶⟶𝐴 → (𝐹:dom 𝐹⟶𝐴 ↔ 𝐹:𝐶⟶𝐴)) |
| 3 | 1 | sseq1d 3212 | . . . . . 6 ⊢ (𝐹:𝐶⟶𝐴 → (dom 𝐹 ⊆ 𝐵 ↔ 𝐶 ⊆ 𝐵)) |
| 4 | 2, 3 | anbi12d 473 | . . . . 5 ⊢ (𝐹:𝐶⟶𝐴 → ((𝐹:dom 𝐹⟶𝐴 ∧ dom 𝐹 ⊆ 𝐵) ↔ (𝐹:𝐶⟶𝐴 ∧ 𝐶 ⊆ 𝐵))) |
| 5 | 4 | adantr 276 | . . . 4 ⊢ ((𝐹:𝐶⟶𝐴 ∧ 𝐶 ⊆ 𝐵) → ((𝐹:dom 𝐹⟶𝐴 ∧ dom 𝐹 ⊆ 𝐵) ↔ (𝐹:𝐶⟶𝐴 ∧ 𝐶 ⊆ 𝐵))) |
| 6 | 5 | ibir 177 | . . 3 ⊢ ((𝐹:𝐶⟶𝐴 ∧ 𝐶 ⊆ 𝐵) → (𝐹:dom 𝐹⟶𝐴 ∧ dom 𝐹 ⊆ 𝐵)) |
| 7 | elpm2g 6724 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐹 ∈ (𝐴 ↑pm 𝐵) ↔ (𝐹:dom 𝐹⟶𝐴 ∧ dom 𝐹 ⊆ 𝐵))) | |
| 8 | 6, 7 | imbitrrid 156 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ((𝐹:𝐶⟶𝐴 ∧ 𝐶 ⊆ 𝐵) → 𝐹 ∈ (𝐴 ↑pm 𝐵))) |
| 9 | 8 | imp 124 | 1 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) ∧ (𝐹:𝐶⟶𝐴 ∧ 𝐶 ⊆ 𝐵)) → 𝐹 ∈ (𝐴 ↑pm 𝐵)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∈ wcel 2167 ⊆ wss 3157 dom cdm 4663 ⟶wf 5254 (class class class)co 5922 ↑pm cpm 6708 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-setind 4573 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-ral 2480 df-rex 2481 df-rab 2484 df-v 2765 df-sbc 2990 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-opab 4095 df-id 4328 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-rn 4674 df-iota 5219 df-fun 5260 df-fn 5261 df-f 5262 df-fv 5266 df-ov 5925 df-oprab 5926 df-mpo 5927 df-pm 6710 |
| This theorem is referenced by: fpmg 6733 pmresg 6735 ennnfonelemg 12620 lmbrf 14451 ellimc3apf 14896 dvfvalap 14917 dvmulxxbr 14938 dvaddxx 14939 dvmulxx 14940 dviaddf 14941 dvimulf 14942 dvcoapbr 14943 dvmptclx 14954 |
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