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| Mirrors > Home > ILE Home > Th. List > psrbag | GIF version | ||
| Description: Elementhood in the set of finite bags. (Contributed by Mario Carneiro, 29-Dec-2014.) |
| Ref | Expression |
|---|---|
| psrbag.d | ⊢ 𝐷 = {𝑓 ∈ (ℕ0 ↑𝑚 𝐼) ∣ (◡𝑓 “ ℕ) ∈ Fin} |
| Ref | Expression |
|---|---|
| psrbag | ⊢ (𝐼 ∈ 𝑉 → (𝐹 ∈ 𝐷 ↔ (𝐹:𝐼⟶ℕ0 ∧ (◡𝐹 “ ℕ) ∈ Fin))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnveq 4934 | . . . . 5 ⊢ (𝑓 = 𝐹 → ◡𝑓 = ◡𝐹) | |
| 2 | 1 | imaeq1d 5105 | . . . 4 ⊢ (𝑓 = 𝐹 → (◡𝑓 “ ℕ) = (◡𝐹 “ ℕ)) |
| 3 | 2 | eleq1d 2303 | . . 3 ⊢ (𝑓 = 𝐹 → ((◡𝑓 “ ℕ) ∈ Fin ↔ (◡𝐹 “ ℕ) ∈ Fin)) |
| 4 | psrbag.d | . . 3 ⊢ 𝐷 = {𝑓 ∈ (ℕ0 ↑𝑚 𝐼) ∣ (◡𝑓 “ ℕ) ∈ Fin} | |
| 5 | 3, 4 | elrab2 2979 | . 2 ⊢ (𝐹 ∈ 𝐷 ↔ (𝐹 ∈ (ℕ0 ↑𝑚 𝐼) ∧ (◡𝐹 “ ℕ) ∈ Fin)) |
| 6 | nn0ex 9519 | . . . 4 ⊢ ℕ0 ∈ V | |
| 7 | elmapg 6908 | . . . 4 ⊢ ((ℕ0 ∈ V ∧ 𝐼 ∈ 𝑉) → (𝐹 ∈ (ℕ0 ↑𝑚 𝐼) ↔ 𝐹:𝐼⟶ℕ0)) | |
| 8 | 6, 7 | mpan 424 | . . 3 ⊢ (𝐼 ∈ 𝑉 → (𝐹 ∈ (ℕ0 ↑𝑚 𝐼) ↔ 𝐹:𝐼⟶ℕ0)) |
| 9 | 8 | anbi1d 465 | . 2 ⊢ (𝐼 ∈ 𝑉 → ((𝐹 ∈ (ℕ0 ↑𝑚 𝐼) ∧ (◡𝐹 “ ℕ) ∈ Fin) ↔ (𝐹:𝐼⟶ℕ0 ∧ (◡𝐹 “ ℕ) ∈ Fin))) |
| 10 | 5, 9 | bitrid 192 | 1 ⊢ (𝐼 ∈ 𝑉 → (𝐹 ∈ 𝐷 ↔ (𝐹:𝐼⟶ℕ0 ∧ (◡𝐹 “ ℕ) ∈ Fin))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1398 ∈ wcel 2205 {crab 2526 Vcvv 2815 ◡ccnv 4753 “ cima 4757 ⟶wf 5353 (class class class)co 6058 ↑𝑚 cmap 6895 Fincfn 6988 ℕcn 9254 ℕ0cn0 9513 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-i2m1 8248 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-sbc 3046 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-br 4115 df-opab 4177 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-fv 5365 df-ov 6061 df-oprab 6062 df-mpo 6063 df-map 6897 df-inn 9255 df-n0 9514 |
| This theorem is referenced by: psrbagfsupp 14945 fczpsrbag 14946 psrbaglesuppg 14947 psrbaglecl 14950 psrbagcon 14952 |
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