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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 5441 | . . . . . . 7 ⊢ (𝐹:𝐶⟶𝐴 → dom 𝐹 = 𝐶) | |
| 2 | 1 | feq2d 5423 | . . . . . 6 ⊢ (𝐹:𝐶⟶𝐴 → (𝐹:dom 𝐹⟶𝐴 ↔ 𝐹:𝐶⟶𝐴)) |
| 3 | 1 | sseq1d 3226 | . . . . . 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 6765 | . . 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 2177 ⊆ wss 3170 dom cdm 4683 ⟶wf 5276 (class class class)co 5957 ↑pm cpm 6749 |
| 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2179 ax-14 2180 ax-ext 2188 ax-sep 4170 ax-pow 4226 ax-pr 4261 ax-un 4488 ax-setind 4593 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ne 2378 df-ral 2490 df-rex 2491 df-rab 2494 df-v 2775 df-sbc 3003 df-dif 3172 df-un 3174 df-in 3176 df-ss 3183 df-pw 3623 df-sn 3644 df-pr 3645 df-op 3647 df-uni 3857 df-br 4052 df-opab 4114 df-id 4348 df-xp 4689 df-rel 4690 df-cnv 4691 df-co 4692 df-dm 4693 df-rn 4694 df-iota 5241 df-fun 5282 df-fn 5283 df-f 5284 df-fv 5288 df-ov 5960 df-oprab 5961 df-mpo 5962 df-pm 6751 |
| This theorem is referenced by: fpmg 6774 pmresg 6776 ennnfonelemg 12849 lmbrf 14762 ellimc3apf 15207 dvfvalap 15228 dvmulxxbr 15249 dvaddxx 15250 dvmulxx 15251 dviaddf 15252 dvimulf 15253 dvcoapbr 15254 dvmptclx 15265 |
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