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| Mirrors > Home > MPE Home > Th. List > psr1baslem | Structured version Visualization version GIF version | ||
| Description: The set of finite bags on 1o is just the set of all functions from 1o to ℕ0. (Contributed by Mario Carneiro, 9-Feb-2015.) |
| Ref | Expression |
|---|---|
| psr1baslem | ⊢ (ℕ0 ↑m 1o) = {𝑓 ∈ (ℕ0 ↑m 1o) ∣ (◡𝑓 “ ℕ) ∈ Fin} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rabid2 3452 | . 2 ⊢ ((ℕ0 ↑m 1o) = {𝑓 ∈ (ℕ0 ↑m 1o) ∣ (◡𝑓 “ ℕ) ∈ Fin} ↔ ∀𝑓 ∈ (ℕ0 ↑m 1o)(◡𝑓 “ ℕ) ∈ Fin) | |
| 2 | df1o2 8469 | . . . 4 ⊢ 1o = {∅} | |
| 3 | snfi 9050 | . . . 4 ⊢ {∅} ∈ Fin | |
| 4 | 2, 3 | eqeltri 2862 | . . 3 ⊢ 1o ∈ Fin |
| 5 | cnvimass 6089 | . . . 4 ⊢ (◡𝑓 “ ℕ) ⊆ dom 𝑓 | |
| 6 | elmapi 8855 | . . . 4 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → 𝑓:1o⟶ℕ0) | |
| 7 | 5, 6 | fssdm 6732 | . . 3 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → (◡𝑓 “ ℕ) ⊆ 1o) |
| 8 | ssfi 9167 | . . 3 ⊢ ((1o ∈ Fin ∧ (◡𝑓 “ ℕ) ⊆ 1o) → (◡𝑓 “ ℕ) ∈ Fin) | |
| 9 | 4, 7, 8 | sylancr 599 | . 2 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → (◡𝑓 “ ℕ) ∈ Fin) |
| 10 | 1, 9 | mprgbir 3089 | 1 ⊢ (ℕ0 ↑m 1o) = {𝑓 ∈ (ℕ0 ↑m 1o) ∣ (◡𝑓 “ ℕ) ∈ Fin} |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2146 {crab 3419 ⊆ wss 3908 ∅c0 4289 {csn 4594 ◡ccnv 5665 “ cima 5669 (class class class)co 7423 1oc1o 8455 ↑m cmap 8833 Fincfn 8952 ℕcn 12251 ℕ0cn0 12522 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-ral 3083 df-rex 3093 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-1st 7995 df-2nd 7996 df-1o 8462 df-map 8835 df-en 8953 df-fin 8956 |
| This theorem is used by: psr1bas 22388 ply1basf 22399 ply1plusgfvi 22438 coe1z 22461 coe1mul2 22467 coe1tm 22471 ply1coe 22495 rhmply1vsca 22582 deg1ldg 26286 deg1leb 26289 deg1val 26290 selvply1rhmlema 33939 selvply1rhmlemb 33940 selvply1rhmlem1 33941 selvply1rhmlem2 33942 selvply1rhm0 33947 |
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