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| Mirrors > Home > MPE Home > Th. List > pwssplit0 | Structured version Visualization version GIF version | ||
| Description: Splitting for structure powers, part 0: restriction is a function. (Contributed by Stefan O'Rear, 24-Jan-2015.) |
| Ref | Expression |
|---|---|
| pwssplit1.y | ⊢ 𝑌 = (𝑊 ↑s 𝑈) |
| pwssplit1.z | ⊢ 𝑍 = (𝑊 ↑s 𝑉) |
| pwssplit1.b | ⊢ 𝐵 = (Base‘𝑌) |
| pwssplit1.c | ⊢ 𝐶 = (Base‘𝑍) |
| pwssplit1.f | ⊢ 𝐹 = (𝑥 ∈ 𝐵 ↦ (𝑥 ↾ 𝑉)) |
| Ref | Expression |
|---|---|
| pwssplit0 | ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝐹:𝐵⟶𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pwssplit1.y | . . . . . . 7 ⊢ 𝑌 = (𝑊 ↑s 𝑈) | |
| 2 | eqid 2769 | . . . . . . 7 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
| 3 | pwssplit1.b | . . . . . . 7 ⊢ 𝐵 = (Base‘𝑌) | |
| 4 | 1, 2, 3 | pwselbasb 17537 | . . . . . 6 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋) → (𝑥 ∈ 𝐵 ↔ 𝑥:𝑈⟶(Base‘𝑊))) |
| 5 | 4 | 3adant3 1148 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → (𝑥 ∈ 𝐵 ↔ 𝑥:𝑈⟶(Base‘𝑊))) |
| 6 | 5 | biimpa 481 | . . . 4 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → 𝑥:𝑈⟶(Base‘𝑊)) |
| 7 | simpl3 1210 | . . . 4 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → 𝑉 ⊆ 𝑈) | |
| 8 | 6, 7 | fssresd 6743 | . . 3 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊)) |
| 9 | simp1 1152 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑊 ∈ 𝑇) | |
| 10 | simp2 1153 | . . . . . 6 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑈 ∈ 𝑋) | |
| 11 | simp3 1154 | . . . . . 6 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑉 ⊆ 𝑈) | |
| 12 | 10, 11 | ssexd 5292 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑉 ∈ V) |
| 13 | pwssplit1.z | . . . . . 6 ⊢ 𝑍 = (𝑊 ↑s 𝑉) | |
| 14 | pwssplit1.c | . . . . . 6 ⊢ 𝐶 = (Base‘𝑍) | |
| 15 | 13, 2, 14 | pwselbasb 17537 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑉 ∈ V) → ((𝑥 ↾ 𝑉) ∈ 𝐶 ↔ (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊))) |
| 16 | 9, 12, 15 | syl2anc 595 | . . . 4 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → ((𝑥 ↾ 𝑉) ∈ 𝐶 ↔ (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊))) |
| 17 | 16 | adantr 485 | . . 3 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → ((𝑥 ↾ 𝑉) ∈ 𝐶 ↔ (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊))) |
| 18 | 8, 17 | mpbird 260 | . 2 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → (𝑥 ↾ 𝑉) ∈ 𝐶) |
| 19 | pwssplit1.f | . 2 ⊢ 𝐹 = (𝑥 ∈ 𝐵 ↦ (𝑥 ↾ 𝑉)) | |
| 20 | 18, 19 | fmptd 7107 | 1 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝐹:𝐵⟶𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 ∧ w3a 1101 = wceq 1567 ∈ wcel 2149 Vcvv 3463 ⊆ wss 3913 ↦ cmpt 5193 ↾ cres 5661 ⟶wf 6530 ‘cfv 6534 (class class class)co 7408 Basecbs 17265 ↑s cpws 17495 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5258 ax-nul 5268 ax-pow 5334 ax-pr 5402 ax-un 7730 ax-cnex 11152 ax-resscn 11153 ax-1cn 11154 ax-icn 11155 ax-addcl 11156 ax-addrcl 11157 ax-mulcl 11158 ax-mulrcl 11159 ax-mulcom 11160 ax-addass 11161 ax-mulass 11162 ax-distr 11163 ax-i2m1 11164 ax-1ne0 11165 ax-1rid 11166 ax-rnegex 11167 ax-rrecex 11168 ax-cnre 11169 ax-pre-lttri 11170 ax-pre-lttrn 11171 ax-pre-ltadd 11172 ax-pre-mulgt0 11173 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-tp 4596 df-op 4598 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6300 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6490 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 df-fv 6542 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7859 df-1st 7982 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-1o 8449 df-er 8690 df-map 8822 df-ixp 8892 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-sup 9398 df-pnf 11241 df-mnf 11242 df-xr 11243 df-ltxr 11244 df-le 11245 df-sub 11439 df-neg 11440 df-nn 12230 df-2 12299 df-3 12300 df-4 12301 df-5 12302 df-6 12303 df-7 12304 df-8 12305 df-9 12306 df-n0 12501 df-z 12588 df-dec 12708 df-uz 12859 df-fz 13532 df-struct 17203 df-slot 17238 df-ndx 17250 df-base 17266 df-plusg 17319 df-mulr 17320 df-sca 17322 df-vsca 17323 df-ip 17324 df-tset 17325 df-ple 17326 df-ds 17328 df-hom 17330 df-cco 17331 df-prds 17496 df-pws 17498 |
| This theorem is referenced by: pwssplit1 21154 pwssplit2 21155 pwssplit3 21156 |
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