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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 2733 | . . . . . . 7 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
| 3 | pwssplit1.b | . . . . . . 7 ⊢ 𝐵 = (Base‘𝑌) | |
| 4 | 1, 2, 3 | pwselbasb 17399 | . . . . . 6 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋) → (𝑥 ∈ 𝐵 ↔ 𝑥:𝑈⟶(Base‘𝑊))) |
| 5 | 4 | 3adant3 1132 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → (𝑥 ∈ 𝐵 ↔ 𝑥:𝑈⟶(Base‘𝑊))) |
| 6 | 5 | biimpa 476 | . . . 4 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → 𝑥:𝑈⟶(Base‘𝑊)) |
| 7 | simpl3 1194 | . . . 4 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → 𝑉 ⊆ 𝑈) | |
| 8 | 6, 7 | fssresd 6698 | . . 3 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊)) |
| 9 | simp1 1136 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑊 ∈ 𝑇) | |
| 10 | simp2 1137 | . . . . . 6 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑈 ∈ 𝑋) | |
| 11 | simp3 1138 | . . . . . 6 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑉 ⊆ 𝑈) | |
| 12 | 10, 11 | ssexd 5266 | . . . . 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 17399 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑉 ∈ V) → ((𝑥 ↾ 𝑉) ∈ 𝐶 ↔ (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊))) |
| 16 | 9, 12, 15 | syl2anc 584 | . . . 4 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → ((𝑥 ↾ 𝑉) ∈ 𝐶 ↔ (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊))) |
| 17 | 16 | adantr 480 | . . 3 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → ((𝑥 ↾ 𝑉) ∈ 𝐶 ↔ (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊))) |
| 18 | 8, 17 | mpbird 257 | . 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 7056 | 1 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝐹:𝐵⟶𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 Vcvv 3437 ⊆ wss 3898 ↦ cmpt 5176 ↾ cres 5623 ⟶wf 6485 ‘cfv 6489 (class class class)co 7355 Basecbs 17127 ↑s cpws 17357 |
| 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 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7677 ax-cnex 11073 ax-resscn 11074 ax-1cn 11075 ax-icn 11076 ax-addcl 11077 ax-addrcl 11078 ax-mulcl 11079 ax-mulrcl 11080 ax-mulcom 11081 ax-addass 11082 ax-mulass 11083 ax-distr 11084 ax-i2m1 11085 ax-1ne0 11086 ax-1rid 11087 ax-rnegex 11088 ax-rrecex 11089 ax-cnre 11090 ax-pre-lttri 11091 ax-pre-lttrn 11092 ax-pre-ltadd 11093 ax-pre-mulgt0 11094 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-tp 4582 df-op 4584 df-uni 4861 df-iun 4945 df-br 5096 df-opab 5158 df-mpt 5177 df-tr 5203 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-riota 7312 df-ov 7358 df-oprab 7359 df-mpo 7360 df-om 7806 df-1st 7930 df-2nd 7931 df-frecs 8220 df-wrecs 8251 df-recs 8300 df-rdg 8338 df-1o 8394 df-er 8631 df-map 8761 df-ixp 8832 df-en 8880 df-dom 8881 df-sdom 8882 df-fin 8883 df-sup 9337 df-pnf 11159 df-mnf 11160 df-xr 11161 df-ltxr 11162 df-le 11163 df-sub 11357 df-neg 11358 df-nn 12137 df-2 12199 df-3 12200 df-4 12201 df-5 12202 df-6 12203 df-7 12204 df-8 12205 df-9 12206 df-n0 12393 df-z 12480 df-dec 12599 df-uz 12743 df-fz 13415 df-struct 17065 df-slot 17100 df-ndx 17112 df-base 17128 df-plusg 17181 df-mulr 17182 df-sca 17184 df-vsca 17185 df-ip 17186 df-tset 17187 df-ple 17188 df-ds 17190 df-hom 17192 df-cco 17193 df-prds 17358 df-pws 17360 |
| This theorem is referenced by: pwssplit1 21002 pwssplit2 21003 pwssplit3 21004 |
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