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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 2761 | . . . . . . 7 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
| 3 | pwssplit1.b | . . . . . . 7 ⊢ 𝐵 = (Base‘𝑌) | |
| 4 | 1, 2, 3 | pwselbasb 17508 | . . . . . 6 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋) → (𝑥 ∈ 𝐵 ↔ 𝑥:𝑈⟶(Base‘𝑊))) |
| 5 | 4 | 3adant3 1144 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → (𝑥 ∈ 𝐵 ↔ 𝑥:𝑈⟶(Base‘𝑊))) |
| 6 | 5 | biimpa 480 | . . . 4 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → 𝑥:𝑈⟶(Base‘𝑊)) |
| 7 | simpl3 1206 | . . . 4 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → 𝑉 ⊆ 𝑈) | |
| 8 | 6, 7 | fssresd 6726 | . . 3 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊)) |
| 9 | simp1 1148 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑊 ∈ 𝑇) | |
| 10 | simp2 1149 | . . . . . 6 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑈 ∈ 𝑋) | |
| 11 | simp3 1150 | . . . . . 6 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝑉 ⊆ 𝑈) | |
| 12 | 10, 11 | ssexd 5277 | . . . . 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 17508 | . . . . 5 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑉 ∈ V) → ((𝑥 ↾ 𝑉) ∈ 𝐶 ↔ (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊))) |
| 16 | 9, 12, 15 | syl2anc 593 | . . . 4 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → ((𝑥 ↾ 𝑉) ∈ 𝐶 ↔ (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊))) |
| 17 | 16 | adantr 484 | . . 3 ⊢ (((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) ∧ 𝑥 ∈ 𝐵) → ((𝑥 ↾ 𝑉) ∈ 𝐶 ↔ (𝑥 ↾ 𝑉):𝑉⟶(Base‘𝑊))) |
| 18 | 8, 17 | mpbird 259 | . 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 7090 | 1 ⊢ ((𝑊 ∈ 𝑇 ∧ 𝑈 ∈ 𝑋 ∧ 𝑉 ⊆ 𝑈) → 𝐹:𝐵⟶𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 ∧ w3a 1097 = wceq 1559 ∈ wcel 2141 Vcvv 3453 ⊆ wss 3902 ↦ cmpt 5178 ↾ cres 5645 ⟶wf 6512 ‘cfv 6516 (class class class)co 7391 Basecbs 17236 ↑s cpws 17466 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-nul 5253 ax-pow 5319 ax-pr 5387 ax-un 7713 ax-cnex 11123 ax-resscn 11124 ax-1cn 11125 ax-icn 11126 ax-addcl 11127 ax-addrcl 11128 ax-mulcl 11129 ax-mulrcl 11130 ax-mulcom 11131 ax-addass 11132 ax-mulass 11133 ax-distr 11134 ax-i2m1 11135 ax-1ne0 11136 ax-1rid 11137 ax-rnegex 11138 ax-rrecex 11139 ax-cnre 11140 ax-pre-lttri 11141 ax-pre-lttrn 11142 ax-pre-ltadd 11143 ax-pre-mulgt0 11144 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-tp 4584 df-op 4586 df-uni 4863 df-iun 4948 df-br 5098 df-opab 5160 df-mpt 5179 df-tr 5205 df-id 5538 df-eprel 5543 df-po 5551 df-so 5552 df-fr 5596 df-we 5598 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-pred 6283 df-ord 6344 df-on 6345 df-lim 6346 df-suc 6347 df-iota 6472 df-fun 6518 df-fn 6519 df-f 6520 df-f1 6521 df-fo 6522 df-f1o 6523 df-fv 6524 df-riota 7348 df-ov 7394 df-oprab 7395 df-mpo 7396 df-om 7842 df-1st 7965 df-2nd 7966 df-frecs 8256 df-wrecs 8287 df-recs 8336 df-rdg 8375 df-1o 8431 df-er 8672 df-map 8804 df-ixp 8874 df-en 8922 df-dom 8923 df-sdom 8924 df-fin 8925 df-sup 9382 df-pnf 11212 df-mnf 11213 df-xr 11214 df-ltxr 11215 df-le 11216 df-sub 11410 df-neg 11411 df-nn 12205 df-2 12274 df-3 12275 df-4 12276 df-5 12277 df-6 12278 df-7 12279 df-8 12280 df-9 12281 df-n0 12476 df-z 12563 df-dec 12683 df-uz 12834 df-fz 13507 df-struct 17174 df-slot 17209 df-ndx 17221 df-base 17237 df-plusg 17290 df-mulr 17291 df-sca 17293 df-vsca 17294 df-ip 17295 df-tset 17296 df-ple 17297 df-ds 17299 df-hom 17301 df-cco 17302 df-prds 17467 df-pws 17469 |
| This theorem is referenced by: pwssplit1 21114 pwssplit2 21115 pwssplit3 21116 |
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