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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 3384 | . 2 ⊢ ((ℕ0 ↑m 1o) = {𝑓 ∈ (ℕ0 ↑m 1o) ∣ (◡𝑓 “ ℕ) ∈ Fin} ↔ ∀𝑓 ∈ (ℕ0 ↑m 1o)(◡𝑓 “ ℕ) ∈ Fin) | |
2 | df1o2 8119 | . . . 4 ⊢ 1o = {∅} | |
3 | snfi 8597 | . . . 4 ⊢ {∅} ∈ Fin | |
4 | 2, 3 | eqeltri 2912 | . . 3 ⊢ 1o ∈ Fin |
5 | cnvimass 5952 | . . . 4 ⊢ (◡𝑓 “ ℕ) ⊆ dom 𝑓 | |
6 | elmapi 8431 | . . . 4 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → 𝑓:1o⟶ℕ0) | |
7 | 5, 6 | fssdm 6533 | . . 3 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → (◡𝑓 “ ℕ) ⊆ 1o) |
8 | ssfi 8741 | . . 3 ⊢ ((1o ∈ Fin ∧ (◡𝑓 “ ℕ) ⊆ 1o) → (◡𝑓 “ ℕ) ∈ Fin) | |
9 | 4, 7, 8 | sylancr 589 | . 2 ⊢ (𝑓 ∈ (ℕ0 ↑m 1o) → (◡𝑓 “ ℕ) ∈ Fin) |
10 | 1, 9 | mprgbir 3156 | 1 ⊢ (ℕ0 ↑m 1o) = {𝑓 ∈ (ℕ0 ↑m 1o) ∣ (◡𝑓 “ ℕ) ∈ Fin} |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1536 ∈ wcel 2113 {crab 3145 ⊆ wss 3939 ∅c0 4294 {csn 4570 ◡ccnv 5557 “ cima 5561 (class class class)co 7159 1oc1o 8098 ↑m cmap 8409 Fincfn 8512 ℕcn 11641 ℕ0cn0 11900 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-sep 5206 ax-nul 5213 ax-pow 5269 ax-pr 5333 ax-un 7464 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ne 3020 df-ral 3146 df-rex 3147 df-rab 3150 df-v 3499 df-sbc 3776 df-csb 3887 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-pss 3957 df-nul 4295 df-if 4471 df-pw 4544 df-sn 4571 df-pr 4573 df-tp 4575 df-op 4577 df-uni 4842 df-iun 4924 df-br 5070 df-opab 5132 df-mpt 5150 df-tr 5176 df-id 5463 df-eprel 5468 df-po 5477 df-so 5478 df-fr 5517 df-we 5519 df-xp 5564 df-rel 5565 df-cnv 5566 df-co 5567 df-dm 5568 df-rn 5569 df-res 5570 df-ima 5571 df-ord 6197 df-on 6198 df-lim 6199 df-suc 6200 df-iota 6317 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-ov 7162 df-oprab 7163 df-mpo 7164 df-om 7584 df-1st 7692 df-2nd 7693 df-1o 8105 df-er 8292 df-map 8411 df-en 8513 df-fin 8516 |
This theorem is referenced by: psr1bas 20362 ply1basf 20373 ply1plusgfvi 20413 coe1z 20434 coe1mul2 20440 coe1tm 20444 ply1coe 20467 deg1ldg 24689 deg1leb 24692 deg1val 24693 |
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