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Mirrors > Home > ILE Home > Th. List > ixpssmap2g | GIF version |
Description: An infinite Cartesian product is a subset of set exponentiation. This version of ixpssmapg 6525 avoids ax-coll 3975. (Contributed by Mario Carneiro, 16-Nov-2014.) |
Ref | Expression |
---|---|
ixpssmap2g | ⊢ (∪ 𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → X𝑥 ∈ 𝐴 𝐵 ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ixpf 6517 | . . . . 5 ⊢ (𝑓 ∈ X𝑥 ∈ 𝐴 𝐵 → 𝑓:𝐴⟶∪ 𝑥 ∈ 𝐴 𝐵) | |
2 | 1 | adantl 272 | . . . 4 ⊢ ((∪ 𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 ∧ 𝑓 ∈ X𝑥 ∈ 𝐴 𝐵) → 𝑓:𝐴⟶∪ 𝑥 ∈ 𝐴 𝐵) |
3 | ixpfn 6501 | . . . . . 6 ⊢ (𝑓 ∈ X𝑥 ∈ 𝐴 𝐵 → 𝑓 Fn 𝐴) | |
4 | fndm 5147 | . . . . . . 7 ⊢ (𝑓 Fn 𝐴 → dom 𝑓 = 𝐴) | |
5 | vex 2636 | . . . . . . . 8 ⊢ 𝑓 ∈ V | |
6 | 5 | dmex 4731 | . . . . . . 7 ⊢ dom 𝑓 ∈ V |
7 | 4, 6 | syl6eqelr 2186 | . . . . . 6 ⊢ (𝑓 Fn 𝐴 → 𝐴 ∈ V) |
8 | 3, 7 | syl 14 | . . . . 5 ⊢ (𝑓 ∈ X𝑥 ∈ 𝐴 𝐵 → 𝐴 ∈ V) |
9 | elmapg 6458 | . . . . 5 ⊢ ((∪ 𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 ∧ 𝐴 ∈ V) → (𝑓 ∈ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐴) ↔ 𝑓:𝐴⟶∪ 𝑥 ∈ 𝐴 𝐵)) | |
10 | 8, 9 | sylan2 281 | . . . 4 ⊢ ((∪ 𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 ∧ 𝑓 ∈ X𝑥 ∈ 𝐴 𝐵) → (𝑓 ∈ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐴) ↔ 𝑓:𝐴⟶∪ 𝑥 ∈ 𝐴 𝐵)) |
11 | 2, 10 | mpbird 166 | . . 3 ⊢ ((∪ 𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 ∧ 𝑓 ∈ X𝑥 ∈ 𝐴 𝐵) → 𝑓 ∈ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐴)) |
12 | 11 | ex 114 | . 2 ⊢ (∪ 𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → (𝑓 ∈ X𝑥 ∈ 𝐴 𝐵 → 𝑓 ∈ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐴))) |
13 | 12 | ssrdv 3045 | 1 ⊢ (∪ 𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → X𝑥 ∈ 𝐴 𝐵 ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐴)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 ∈ wcel 1445 Vcvv 2633 ⊆ wss 3013 ∪ ciun 3752 dom cdm 4467 Fn wfn 5044 ⟶wf 5045 (class class class)co 5690 ↑𝑚 cmap 6445 Xcixp 6495 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 582 ax-in2 583 ax-io 668 ax-5 1388 ax-7 1389 ax-gen 1390 ax-ie1 1434 ax-ie2 1435 ax-8 1447 ax-10 1448 ax-11 1449 ax-i12 1450 ax-bndl 1451 ax-4 1452 ax-13 1456 ax-14 1457 ax-17 1471 ax-i9 1475 ax-ial 1479 ax-i5r 1480 ax-ext 2077 ax-sep 3978 ax-pow 4030 ax-pr 4060 ax-un 4284 ax-setind 4381 |
This theorem depends on definitions: df-bi 116 df-3an 929 df-tru 1299 df-fal 1302 df-nf 1402 df-sb 1700 df-eu 1958 df-mo 1959 df-clab 2082 df-cleq 2088 df-clel 2091 df-nfc 2224 df-ne 2263 df-ral 2375 df-rex 2376 df-v 2635 df-sbc 2855 df-dif 3015 df-un 3017 df-in 3019 df-ss 3026 df-pw 3451 df-sn 3472 df-pr 3473 df-op 3475 df-uni 3676 df-iun 3754 df-br 3868 df-opab 3922 df-mpt 3923 df-id 4144 df-xp 4473 df-rel 4474 df-cnv 4475 df-co 4476 df-dm 4477 df-rn 4478 df-iota 5014 df-fun 5051 df-fn 5052 df-f 5053 df-fv 5057 df-ov 5693 df-oprab 5694 df-mpt2 5695 df-map 6447 df-ixp 6496 |
This theorem is referenced by: ixpssmapg 6525 |
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