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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > cncfcompt2 | Structured version Visualization version GIF version |
Description: Composition of continuous functions. (Contributed by Glauco Siliprandi, 5-Apr-2020.) |
Ref | Expression |
---|---|
cncfcompt2.xph | ⊢ Ⅎ𝑥𝜑 |
cncfcompt2.ab | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑅) ∈ (𝐴–cn→𝐵)) |
cncfcompt2.cd | ⊢ (𝜑 → (𝑦 ∈ 𝐶 ↦ 𝑆) ∈ (𝐶–cn→𝐸)) |
cncfcompt2.bc | ⊢ (𝜑 → 𝐵 ⊆ 𝐶) |
cncfcompt2.st | ⊢ (𝑦 = 𝑅 → 𝑆 = 𝑇) |
Ref | Expression |
---|---|
cncfcompt2 | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑇) ∈ (𝐴–cn→𝐸)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cncfcompt2.xph | . . . . 5 ⊢ Ⅎ𝑥𝜑 | |
2 | cncfcompt2.bc | . . . . . . . 8 ⊢ (𝜑 → 𝐵 ⊆ 𝐶) | |
3 | 2 | adantr 474 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ⊆ 𝐶) |
4 | cncfcompt2.ab | . . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑅) ∈ (𝐴–cn→𝐵)) | |
5 | cncff 23065 | . . . . . . . . 9 ⊢ ((𝑥 ∈ 𝐴 ↦ 𝑅) ∈ (𝐴–cn→𝐵) → (𝑥 ∈ 𝐴 ↦ 𝑅):𝐴⟶𝐵) | |
6 | 4, 5 | syl 17 | . . . . . . . 8 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑅):𝐴⟶𝐵) |
7 | 6 | fvmptelrn 6631 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑅 ∈ 𝐵) |
8 | 3, 7 | sseldd 3827 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑅 ∈ 𝐶) |
9 | 8 | ex 403 | . . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝐴 → 𝑅 ∈ 𝐶)) |
10 | 1, 9 | ralrimi 3165 | . . . 4 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝑅 ∈ 𝐶) |
11 | eqidd 2825 | . . . 4 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑅) = (𝑥 ∈ 𝐴 ↦ 𝑅)) | |
12 | eqidd 2825 | . . . 4 ⊢ (𝜑 → (𝑦 ∈ 𝐶 ↦ 𝑆) = (𝑦 ∈ 𝐶 ↦ 𝑆)) | |
13 | cncfcompt2.st | . . . 4 ⊢ (𝑦 = 𝑅 → 𝑆 = 𝑇) | |
14 | 10, 11, 12, 13 | fmptcof 6646 | . . 3 ⊢ (𝜑 → ((𝑦 ∈ 𝐶 ↦ 𝑆) ∘ (𝑥 ∈ 𝐴 ↦ 𝑅)) = (𝑥 ∈ 𝐴 ↦ 𝑇)) |
15 | 14 | eqcomd 2830 | . 2 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑇) = ((𝑦 ∈ 𝐶 ↦ 𝑆) ∘ (𝑥 ∈ 𝐴 ↦ 𝑅))) |
16 | cncfcompt2.cd | . . . . . 6 ⊢ (𝜑 → (𝑦 ∈ 𝐶 ↦ 𝑆) ∈ (𝐶–cn→𝐸)) | |
17 | cncfrss 23063 | . . . . . 6 ⊢ ((𝑦 ∈ 𝐶 ↦ 𝑆) ∈ (𝐶–cn→𝐸) → 𝐶 ⊆ ℂ) | |
18 | 16, 17 | syl 17 | . . . . 5 ⊢ (𝜑 → 𝐶 ⊆ ℂ) |
19 | cncfss 23071 | . . . . 5 ⊢ ((𝐵 ⊆ 𝐶 ∧ 𝐶 ⊆ ℂ) → (𝐴–cn→𝐵) ⊆ (𝐴–cn→𝐶)) | |
20 | 2, 18, 19 | syl2anc 581 | . . . 4 ⊢ (𝜑 → (𝐴–cn→𝐵) ⊆ (𝐴–cn→𝐶)) |
21 | 20, 4 | sseldd 3827 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑅) ∈ (𝐴–cn→𝐶)) |
22 | 21, 16 | cncfco 23079 | . 2 ⊢ (𝜑 → ((𝑦 ∈ 𝐶 ↦ 𝑆) ∘ (𝑥 ∈ 𝐴 ↦ 𝑅)) ∈ (𝐴–cn→𝐸)) |
23 | 15, 22 | eqeltrd 2905 | 1 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝑇) ∈ (𝐴–cn→𝐸)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 386 = wceq 1658 Ⅎwnf 1884 ∈ wcel 2166 ⊆ wss 3797 ↦ cmpt 4951 ∘ ccom 5345 ⟶wf 6118 (class class class)co 6904 ℂcc 10249 –cn→ccncf 23048 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1896 ax-4 1910 ax-5 2011 ax-6 2077 ax-7 2114 ax-8 2168 ax-9 2175 ax-10 2194 ax-11 2209 ax-12 2222 ax-13 2390 ax-ext 2802 ax-sep 5004 ax-nul 5012 ax-pow 5064 ax-pr 5126 ax-un 7208 ax-cnex 10307 ax-resscn 10308 ax-1cn 10309 ax-icn 10310 ax-addcl 10311 ax-addrcl 10312 ax-mulcl 10313 ax-mulrcl 10314 ax-mulcom 10315 ax-addass 10316 ax-mulass 10317 ax-distr 10318 ax-i2m1 10319 ax-1ne0 10320 ax-1rid 10321 ax-rnegex 10322 ax-rrecex 10323 ax-cnre 10324 ax-pre-lttri 10325 ax-pre-lttrn 10326 ax-pre-ltadd 10327 ax-pre-mulgt0 10328 |
This theorem depends on definitions: df-bi 199 df-an 387 df-or 881 df-3or 1114 df-3an 1115 df-tru 1662 df-ex 1881 df-nf 1885 df-sb 2070 df-mo 2604 df-eu 2639 df-clab 2811 df-cleq 2817 df-clel 2820 df-nfc 2957 df-ne 2999 df-nel 3102 df-ral 3121 df-rex 3122 df-reu 3123 df-rmo 3124 df-rab 3125 df-v 3415 df-sbc 3662 df-csb 3757 df-dif 3800 df-un 3802 df-in 3804 df-ss 3811 df-nul 4144 df-if 4306 df-pw 4379 df-sn 4397 df-pr 4399 df-op 4403 df-uni 4658 df-br 4873 df-opab 4935 df-mpt 4952 df-id 5249 df-po 5262 df-so 5263 df-xp 5347 df-rel 5348 df-cnv 5349 df-co 5350 df-dm 5351 df-rn 5352 df-res 5353 df-ima 5354 df-iota 6085 df-fun 6124 df-fn 6125 df-f 6126 df-f1 6127 df-fo 6128 df-f1o 6129 df-fv 6130 df-riota 6865 df-ov 6907 df-oprab 6908 df-mpt2 6909 df-er 8008 df-map 8123 df-en 8222 df-dom 8223 df-sdom 8224 df-pnf 10392 df-mnf 10393 df-xr 10394 df-ltxr 10395 df-le 10396 df-sub 10586 df-neg 10587 df-div 11009 df-2 11413 df-cj 14215 df-re 14216 df-im 14217 df-abs 14352 df-cncf 23050 |
This theorem is referenced by: etransclem18 41262 etransclem22 41266 etransclem46 41290 |
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