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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 4492 | . . . . 5 ⊢ if(𝑥 = 𝑛, 0, 0) = 0 | |
2 | 1 | eqcomi 2830 | . . . 4 ⊢ 0 = if(𝑥 = 𝑛, 0, 0) |
3 | 2 | a1i 11 | . . 3 ⊢ (𝐼 ∈ 𝑉 → 0 = if(𝑥 = 𝑛, 0, 0)) |
4 | 3 | mpteq2dv 5148 | . 2 ⊢ (𝐼 ∈ 𝑉 → (𝑥 ∈ 𝐼 ↦ 0) = (𝑥 ∈ 𝐼 ↦ if(𝑥 = 𝑛, 0, 0))) |
5 | 0nn0 11899 | . . 3 ⊢ 0 ∈ ℕ0 | |
6 | psrbag.d | . . . 4 ⊢ 𝐷 = {𝑓 ∈ (ℕ0 ↑m 𝐼) ∣ (◡𝑓 “ ℕ) ∈ Fin} | |
7 | 6 | snifpsrbag 20129 | . . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 0 ∈ ℕ0) → (𝑥 ∈ 𝐼 ↦ if(𝑥 = 𝑛, 0, 0)) ∈ 𝐷) |
8 | 5, 7 | mpan2 689 | . 2 ⊢ (𝐼 ∈ 𝑉 → (𝑥 ∈ 𝐼 ↦ if(𝑥 = 𝑛, 0, 0)) ∈ 𝐷) |
9 | 4, 8 | eqeltrd 2913 | 1 ⊢ (𝐼 ∈ 𝑉 → (𝑥 ∈ 𝐼 ↦ 0) ∈ 𝐷) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∈ wcel 2114 {crab 3142 ifcif 4453 ↦ cmpt 5132 ◡ccnv 5540 “ cima 5544 (class class class)co 7142 ↑m cmap 8392 Fincfn 8495 0cc0 10523 ℕcn 11624 ℕ0cn0 11884 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-rep 5176 ax-sep 5189 ax-nul 5196 ax-pow 5252 ax-pr 5316 ax-un 7447 ax-cnex 10579 ax-resscn 10580 ax-1cn 10581 ax-icn 10582 ax-addcl 10583 ax-addrcl 10584 ax-mulcl 10585 ax-mulrcl 10586 ax-mulcom 10587 ax-addass 10588 ax-mulass 10589 ax-distr 10590 ax-i2m1 10591 ax-1ne0 10592 ax-1rid 10593 ax-rnegex 10594 ax-rrecex 10595 ax-cnre 10596 ax-pre-lttri 10597 ax-pre-lttrn 10598 ax-pre-ltadd 10599 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3488 df-sbc 3764 df-csb 3872 df-dif 3927 df-un 3929 df-in 3931 df-ss 3940 df-pss 3942 df-nul 4280 df-if 4454 df-pw 4527 df-sn 4554 df-pr 4556 df-tp 4558 df-op 4560 df-uni 4825 df-iun 4907 df-br 5053 df-opab 5115 df-mpt 5133 df-tr 5159 df-id 5446 df-eprel 5451 df-po 5460 df-so 5461 df-fr 5500 df-we 5502 df-xp 5547 df-rel 5548 df-cnv 5549 df-co 5550 df-dm 5551 df-rn 5552 df-res 5553 df-ima 5554 df-pred 6134 df-ord 6180 df-on 6181 df-lim 6182 df-suc 6183 df-iota 6300 df-fun 6343 df-fn 6344 df-f 6345 df-f1 6346 df-fo 6347 df-f1o 6348 df-fv 6349 df-ov 7145 df-oprab 7146 df-mpo 7147 df-om 7567 df-supp 7817 df-wrecs 7933 df-recs 7994 df-rdg 8032 df-1o 8088 df-er 8275 df-map 8394 df-en 8496 df-dom 8497 df-sdom 8498 df-fin 8499 df-fsupp 8820 df-pnf 10663 df-mnf 10664 df-xr 10665 df-ltxr 10666 df-le 10667 df-nn 11625 df-n0 11885 |
This theorem is referenced by: psrbas 20141 psrlidm 20166 psrridm 20167 |
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