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| Mirrors > Home > MPE Home > Th. List > resunimafz0 | Structured version Visualization version GIF version | ||
| Description: TODO-AV: Revise using 𝐹 ∈ Word dom 𝐼? Formerly part of proof of eupth2lem3 30587: The union of a restriction by an image over an open range of nonnegative integers and a singleton of an ordered pair is a restriction by an image over an interval of nonnegative integers. (Contributed by Mario Carneiro, 8-Apr-2015.) (Revised by AV, 20-Feb-2021.) |
| Ref | Expression |
|---|---|
| resunimafz0.i | ⊢ (𝜑 → Fun 𝐼) |
| resunimafz0.f | ⊢ (𝜑 → 𝐹:(0..^(♯‘𝐹))⟶dom 𝐼) |
| resunimafz0.n | ⊢ (𝜑 → 𝑁 ∈ (0..^(♯‘𝐹))) |
| Ref | Expression |
|---|---|
| resunimafz0 | ⊢ (𝜑 → (𝐼 ↾ (𝐹 “ (0...𝑁))) = ((𝐼 ↾ (𝐹 “ (0..^𝑁))) ∪ {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉})) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | imaundi 6147 | . . . . 5 ⊢ (𝐹 “ ((0..^𝑁) ∪ {𝑁})) = ((𝐹 “ (0..^𝑁)) ∪ (𝐹 “ {𝑁})) | |
| 2 | resunimafz0.n | . . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ (0..^(♯‘𝐹))) | |
| 3 | elfzonn0 13732 | . . . . . . . . 9 ⊢ (𝑁 ∈ (0..^(♯‘𝐹)) → 𝑁 ∈ ℕ0) | |
| 4 | 2, 3 | syl 18 | . . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℕ0) |
| 5 | elnn0uz 12898 | . . . . . . . 8 ⊢ (𝑁 ∈ ℕ0 ↔ 𝑁 ∈ (ℤ≥‘0)) | |
| 6 | 4, 5 | sylib 221 | . . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘0)) |
| 7 | fzisfzounsn 13805 | . . . . . . 7 ⊢ (𝑁 ∈ (ℤ≥‘0) → (0...𝑁) = ((0..^𝑁) ∪ {𝑁})) | |
| 8 | 6, 7 | syl 18 | . . . . . 6 ⊢ (𝜑 → (0...𝑁) = ((0..^𝑁) ∪ {𝑁})) |
| 9 | 8 | imaeq2d 6062 | . . . . 5 ⊢ (𝜑 → (𝐹 “ (0...𝑁)) = (𝐹 “ ((0..^𝑁) ∪ {𝑁}))) |
| 10 | resunimafz0.f | . . . . . . . 8 ⊢ (𝜑 → 𝐹:(0..^(♯‘𝐹))⟶dom 𝐼) | |
| 11 | 10 | ffnd 6706 | . . . . . . 7 ⊢ (𝜑 → 𝐹 Fn (0..^(♯‘𝐹))) |
| 12 | fnsnfv 6960 | . . . . . . 7 ⊢ ((𝐹 Fn (0..^(♯‘𝐹)) ∧ 𝑁 ∈ (0..^(♯‘𝐹))) → {(𝐹‘𝑁)} = (𝐹 “ {𝑁})) | |
| 13 | 11, 2, 12 | syl2anc 595 | . . . . . 6 ⊢ (𝜑 → {(𝐹‘𝑁)} = (𝐹 “ {𝑁})) |
| 14 | 13 | uneq2d 4122 | . . . . 5 ⊢ (𝜑 → ((𝐹 “ (0..^𝑁)) ∪ {(𝐹‘𝑁)}) = ((𝐹 “ (0..^𝑁)) ∪ (𝐹 “ {𝑁}))) |
| 15 | 1, 9, 14 | 3eqtr4a 2824 | . . . 4 ⊢ (𝜑 → (𝐹 “ (0...𝑁)) = ((𝐹 “ (0..^𝑁)) ∪ {(𝐹‘𝑁)})) |
| 16 | 15 | reseq2d 5978 | . . 3 ⊢ (𝜑 → (𝐼 ↾ (𝐹 “ (0...𝑁))) = (𝐼 ↾ ((𝐹 “ (0..^𝑁)) ∪ {(𝐹‘𝑁)}))) |
| 17 | resundi 5992 | . . 3 ⊢ (𝐼 ↾ ((𝐹 “ (0..^𝑁)) ∪ {(𝐹‘𝑁)})) = ((𝐼 ↾ (𝐹 “ (0..^𝑁))) ∪ (𝐼 ↾ {(𝐹‘𝑁)})) | |
| 18 | 16, 17 | eqtrdi 2814 | . 2 ⊢ (𝜑 → (𝐼 ↾ (𝐹 “ (0...𝑁))) = ((𝐼 ↾ (𝐹 “ (0..^𝑁))) ∪ (𝐼 ↾ {(𝐹‘𝑁)}))) |
| 19 | resunimafz0.i | . . . . 5 ⊢ (𝜑 → Fun 𝐼) | |
| 20 | 19 | funfnd 6567 | . . . 4 ⊢ (𝜑 → 𝐼 Fn dom 𝐼) |
| 21 | 10, 2 | ffvelcdmd 7080 | . . . 4 ⊢ (𝜑 → (𝐹‘𝑁) ∈ dom 𝐼) |
| 22 | fnressn 7155 | . . . 4 ⊢ ((𝐼 Fn dom 𝐼 ∧ (𝐹‘𝑁) ∈ dom 𝐼) → (𝐼 ↾ {(𝐹‘𝑁)}) = {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉}) | |
| 23 | 20, 21, 22 | syl2anc 595 | . . 3 ⊢ (𝜑 → (𝐼 ↾ {(𝐹‘𝑁)}) = {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉}) |
| 24 | 23 | uneq2d 4122 | . 2 ⊢ (𝜑 → ((𝐼 ↾ (𝐹 “ (0..^𝑁))) ∪ (𝐼 ↾ {(𝐹‘𝑁)})) = ((𝐼 ↾ (𝐹 “ (0..^𝑁))) ∪ {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉})) |
| 25 | 18, 24 | eqtrd 2798 | 1 ⊢ (𝜑 → (𝐼 ↾ (𝐹 “ (0...𝑁))) = ((𝐼 ↾ (𝐹 “ (0..^𝑁))) ∪ {〈(𝐹‘𝑁), (𝐼‘(𝐹‘𝑁))〉})) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ∈ wcel 2143 ∪ cun 3903 {csn 4589 〈cop 4595 dom cdm 5661 ↾ cres 5663 “ cima 5664 Fun wfun 6530 Fn wfn 6531 ⟶wf 6532 ‘cfv 6536 (class class class)co 7410 0cc0 11095 ℕ0cn0 12499 ℤ≥cuz 12857 ...cfz 13530 ..^cfzo 13678 ♯chash 14362 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11151 ax-resscn 11152 ax-1cn 11153 ax-icn 11154 ax-addcl 11155 ax-addrcl 11156 ax-mulcl 11157 ax-mulrcl 11158 ax-mulcom 11159 ax-addass 11160 ax-mulass 11161 ax-distr 11162 ax-i2m1 11163 ax-1ne0 11164 ax-1rid 11165 ax-rnegex 11166 ax-rrecex 11167 ax-cnre 11168 ax-pre-lttri 11169 ax-pre-lttrn 11170 ax-pre-ltadd 11171 ax-pre-mulgt0 11172 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7859 df-1st 7982 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-pnf 11240 df-mnf 11241 df-xr 11242 df-ltxr 11243 df-le 11244 df-sub 11438 df-neg 11439 df-nn 12229 df-n0 12500 df-z 12587 df-uz 12858 df-fz 13531 df-fzo 13679 |
| This theorem is referenced by: trlsegvdeg 30578 |
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