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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 3445 | . 2 ⊢ ((ℕ0 ↑m 1o) = {𝑓 ∈ (ℕ0 ↑m 1o) ∣ (◡𝑓 “ ℕ) ∈ Fin} ↔ ∀𝑓 ∈ (ℕ0 ↑m 1o)(◡𝑓 “ ℕ) ∈ Fin) | |
| 2 | df1o2 8467 | . . . 4 ⊢ 1o = {∅} | |
| 3 | snfi 9055 | . . . 4 ⊢ {∅} ∈ Fin | |
| 4 | 2, 3 | eqeltri 2857 | . . 3 ⊢ 1o ∈ Fin |
| 5 | cnvimass 6076 | . . . 4 ⊢ (◡𝑓 “ ℕ) ⊆ dom 𝑓 | |
| 6 | elmapi 8853 | . . . 4 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → 𝑓:1o⟶ℕ0) | |
| 7 | 5, 6 | fssdm 6721 | . . 3 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → (◡𝑓 “ ℕ) ⊆ 1o) |
| 8 | ssfi 9172 | . . 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 3084 | 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 2145 {crab 3413 ⊆ wss 3899 ∅c0 4279 {csn 4584 ◡ccnv 5650 “ cima 5654 (class class class)co 7412 1oc1o 8453 ↑m cmap 8831 Fincfn 8957 ℕcn 12316 ℕ0cn0 12587 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7867 df-1st 7990 df-2nd 7991 df-1o 8460 df-map 8833 df-en 8958 df-fin 8961 |
| This theorem is used by: psr1bas 22489 ply1basf 22500 ply1plusgfvi 22539 coe1z 22562 coe1mul2 22568 coe1tm 22572 ply1coe 22596 rhmply1vsca 22683 deg1ldg 26390 deg1leb 26393 deg1val 26394 selvply1rhmlema 34132 selvply1rhmlemb 34133 selvply1rhmlem1 34134 selvply1rhmlem2 34135 selvply1rhm0 34140 |
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