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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 4910 | . . . . 5 ⊢ (𝑓 = 𝐹 → ◡𝑓 = ◡𝐹) | |
| 2 | 1 | imaeq1d 5081 | . . . 4 ⊢ (𝑓 = 𝐹 → (◡𝑓 “ ℕ) = (◡𝐹 “ ℕ)) |
| 3 | 2 | eleq1d 2300 | . . 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 2966 | . 2 ⊢ (𝐹 ∈ 𝐷 ↔ (𝐹 ∈ (ℕ0 ↑𝑚 𝐼) ∧ (◡𝐹 “ ℕ) ∈ Fin)) |
| 6 | nn0ex 9450 | . . . 4 ⊢ ℕ0 ∈ V | |
| 7 | elmapg 6873 | . . . 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 2202 {crab 2515 Vcvv 2803 ◡ccnv 4730 “ cima 4734 ⟶wf 5329 (class class class)co 6028 ↑𝑚 cmap 6860 Fincfn 6952 ℕcn 9185 ℕ0cn0 9444 |
| 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 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-i2m1 8180 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-sbc 3033 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-opab 4156 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-fv 5341 df-ov 6031 df-oprab 6032 df-mpo 6033 df-map 6862 df-inn 9186 df-n0 9445 |
| This theorem is referenced by: fczpsrbag 14750 psrbaglesuppg 14751 psrbaglecl 14754 psrbagcon 14755 |
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