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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 3447 | . 2 ⊢ ((ℕ0 ↑m 1o) = {𝑓 ∈ (ℕ0 ↑m 1o) ∣ (◡𝑓 “ ℕ) ∈ Fin} ↔ ∀𝑓 ∈ (ℕ0 ↑m 1o)(◡𝑓 “ ℕ) ∈ Fin) | |
| 2 | df1o2 8466 | . . . 4 ⊢ 1o = {∅} | |
| 3 | snfi 9054 | . . . 4 ⊢ {∅} ∈ Fin | |
| 4 | 2, 3 | eqeltri 2858 | . . 3 ⊢ 1o ∈ Fin |
| 5 | cnvimass 6082 | . . . 4 ⊢ (◡𝑓 “ ℕ) ⊆ dom 𝑓 | |
| 6 | elmapi 8852 | . . . 4 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → 𝑓:1o⟶ℕ0) | |
| 7 | 5, 6 | fssdm 6726 | . . 3 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → (◡𝑓 “ ℕ) ⊆ 1o) |
| 8 | ssfi 9171 | . . 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 3085 | 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 3414 ⊆ wss 3902 ∅c0 4282 {csn 4587 ◡ccnv 5658 “ cima 5662 (class class class)co 7417 1oc1o 8452 ↑m cmap 8830 Fincfn 8956 ℕcn 12261 ℕ0cn0 12532 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7420 df-oprab 7421 df-mpo 7422 df-om 7867 df-1st 7990 df-2nd 7991 df-1o 8459 df-map 8832 df-en 8957 df-fin 8960 |
| This theorem is used by: psr1bas 22422 ply1basf 22433 ply1plusgfvi 22472 coe1z 22495 coe1mul2 22501 coe1tm 22505 ply1coe 22529 rhmply1vsca 22616 deg1ldg 26324 deg1leb 26327 deg1val 26328 selvply1rhmlema 34036 selvply1rhmlemb 34037 selvply1rhmlem1 34038 selvply1rhmlem2 34039 selvply1rhm0 34044 |
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