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| Mirrors > Home > MPE Home > Th. List > fczpsrbag | Structured version Visualization version GIF version | ||
| Description: The constant function equal to zero is a finite bag. (Contributed by AV, 8-Jul-2019.) |
| Ref | Expression |
|---|---|
| psrbag.d | ⊢ 𝐷 = {𝑓 ∈ (ℕ0 ↑m 𝐼) ∣ (◡𝑓 “ ℕ) ∈ Fin} |
| Ref | Expression |
|---|---|
| fczpsrbag | ⊢ (𝐼 ∈ 𝑉 → (𝑥 ∈ 𝐼 ↦ 0) ∈ 𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ifid 4508 | . . . . 5 ⊢ if(𝑥 = 𝑛, 0, 0) = 0 | |
| 2 | 1 | eqcomi 2746 | . . . 4 ⊢ 0 = if(𝑥 = 𝑛, 0, 0) |
| 3 | 2 | a1i 11 | . . 3 ⊢ (𝐼 ∈ 𝑉 → 0 = if(𝑥 = 𝑛, 0, 0)) |
| 4 | 3 | mpteq2dv 5180 | . 2 ⊢ (𝐼 ∈ 𝑉 → (𝑥 ∈ 𝐼 ↦ 0) = (𝑥 ∈ 𝐼 ↦ if(𝑥 = 𝑛, 0, 0))) |
| 5 | 0nn0 12452 | . . 3 ⊢ 0 ∈ ℕ0 | |
| 6 | psrbag.d | . . . 4 ⊢ 𝐷 = {𝑓 ∈ (ℕ0 ↑m 𝐼) ∣ (◡𝑓 “ ℕ) ∈ Fin} | |
| 7 | 6 | snifpsrbag 21900 | . . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 0 ∈ ℕ0) → (𝑥 ∈ 𝐼 ↦ if(𝑥 = 𝑛, 0, 0)) ∈ 𝐷) |
| 8 | 5, 7 | mpan2 692 | . 2 ⊢ (𝐼 ∈ 𝑉 → (𝑥 ∈ 𝐼 ↦ if(𝑥 = 𝑛, 0, 0)) ∈ 𝐷) |
| 9 | 4, 8 | eqeltrd 2837 | 1 ⊢ (𝐼 ∈ 𝑉 → (𝑥 ∈ 𝐼 ↦ 0) ∈ 𝐷) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 {crab 3390 ifcif 4467 ↦ cmpt 5167 ◡ccnv 5630 “ cima 5634 (class class class)co 7367 ↑m cmap 8773 Fincfn 8893 0cc0 11038 ℕcn 12174 ℕ0cn0 12437 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5213 ax-sep 5232 ax-nul 5242 ax-pow 5308 ax-pr 5376 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6266 df-ord 6327 df-on 6328 df-lim 6329 df-suc 6330 df-iota 6455 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-2nd 7943 df-supp 8111 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-1o 8405 df-er 8643 df-map 8775 df-en 8894 df-dom 8895 df-sdom 8896 df-fin 8897 df-fsupp 9275 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-nn 12175 df-n0 12438 |
| This theorem is referenced by: psrbas 21913 psrlidm 21940 psrridm 21941 |
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