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Mirrors > Home > MPE Home > Th. List > fmfnfmlem1 | Structured version Visualization version GIF version |
Description: Lemma for fmfnfm 23109. (Contributed by Jeff Hankins, 18-Nov-2009.) (Revised by Stefan O'Rear, 8-Aug-2015.) |
Ref | Expression |
---|---|
fmfnfm.b | ⊢ (𝜑 → 𝐵 ∈ (fBas‘𝑌)) |
fmfnfm.l | ⊢ (𝜑 → 𝐿 ∈ (Fil‘𝑋)) |
fmfnfm.f | ⊢ (𝜑 → 𝐹:𝑌⟶𝑋) |
fmfnfm.fm | ⊢ (𝜑 → ((𝑋 FilMap 𝐹)‘𝐵) ⊆ 𝐿) |
Ref | Expression |
---|---|
fmfnfmlem1 | ⊢ (𝜑 → (𝑠 ∈ (fi‘𝐵) → ((𝐹 “ 𝑠) ⊆ 𝑡 → (𝑡 ⊆ 𝑋 → 𝑡 ∈ 𝐿)))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fmfnfm.b | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ (fBas‘𝑌)) | |
2 | fbssfi 22988 | . . . . 5 ⊢ ((𝐵 ∈ (fBas‘𝑌) ∧ 𝑠 ∈ (fi‘𝐵)) → ∃𝑤 ∈ 𝐵 𝑤 ⊆ 𝑠) | |
3 | 1, 2 | sylan 580 | . . . 4 ⊢ ((𝜑 ∧ 𝑠 ∈ (fi‘𝐵)) → ∃𝑤 ∈ 𝐵 𝑤 ⊆ 𝑠) |
4 | sstr2 3928 | . . . . . 6 ⊢ ((𝐹 “ 𝑤) ⊆ (𝐹 “ 𝑠) → ((𝐹 “ 𝑠) ⊆ 𝑡 → (𝐹 “ 𝑤) ⊆ 𝑡)) | |
5 | imass2 6010 | . . . . . 6 ⊢ (𝑤 ⊆ 𝑠 → (𝐹 “ 𝑤) ⊆ (𝐹 “ 𝑠)) | |
6 | 4, 5 | syl11 33 | . . . . 5 ⊢ ((𝐹 “ 𝑠) ⊆ 𝑡 → (𝑤 ⊆ 𝑠 → (𝐹 “ 𝑤) ⊆ 𝑡)) |
7 | 6 | reximdv 3202 | . . . 4 ⊢ ((𝐹 “ 𝑠) ⊆ 𝑡 → (∃𝑤 ∈ 𝐵 𝑤 ⊆ 𝑠 → ∃𝑤 ∈ 𝐵 (𝐹 “ 𝑤) ⊆ 𝑡)) |
8 | 3, 7 | syl5com 31 | . . 3 ⊢ ((𝜑 ∧ 𝑠 ∈ (fi‘𝐵)) → ((𝐹 “ 𝑠) ⊆ 𝑡 → ∃𝑤 ∈ 𝐵 (𝐹 “ 𝑤) ⊆ 𝑡)) |
9 | fmfnfm.l | . . . . . . . 8 ⊢ (𝜑 → 𝐿 ∈ (Fil‘𝑋)) | |
10 | filtop 23006 | . . . . . . . 8 ⊢ (𝐿 ∈ (Fil‘𝑋) → 𝑋 ∈ 𝐿) | |
11 | 9, 10 | syl 17 | . . . . . . 7 ⊢ (𝜑 → 𝑋 ∈ 𝐿) |
12 | fmfnfm.f | . . . . . . 7 ⊢ (𝜑 → 𝐹:𝑌⟶𝑋) | |
13 | elfm 23098 | . . . . . . 7 ⊢ ((𝑋 ∈ 𝐿 ∧ 𝐵 ∈ (fBas‘𝑌) ∧ 𝐹:𝑌⟶𝑋) → (𝑡 ∈ ((𝑋 FilMap 𝐹)‘𝐵) ↔ (𝑡 ⊆ 𝑋 ∧ ∃𝑤 ∈ 𝐵 (𝐹 “ 𝑤) ⊆ 𝑡))) | |
14 | 11, 1, 12, 13 | syl3anc 1370 | . . . . . 6 ⊢ (𝜑 → (𝑡 ∈ ((𝑋 FilMap 𝐹)‘𝐵) ↔ (𝑡 ⊆ 𝑋 ∧ ∃𝑤 ∈ 𝐵 (𝐹 “ 𝑤) ⊆ 𝑡))) |
15 | fmfnfm.fm | . . . . . . 7 ⊢ (𝜑 → ((𝑋 FilMap 𝐹)‘𝐵) ⊆ 𝐿) | |
16 | 15 | sseld 3920 | . . . . . 6 ⊢ (𝜑 → (𝑡 ∈ ((𝑋 FilMap 𝐹)‘𝐵) → 𝑡 ∈ 𝐿)) |
17 | 14, 16 | sylbird 259 | . . . . 5 ⊢ (𝜑 → ((𝑡 ⊆ 𝑋 ∧ ∃𝑤 ∈ 𝐵 (𝐹 “ 𝑤) ⊆ 𝑡) → 𝑡 ∈ 𝐿)) |
18 | 17 | expcomd 417 | . . . 4 ⊢ (𝜑 → (∃𝑤 ∈ 𝐵 (𝐹 “ 𝑤) ⊆ 𝑡 → (𝑡 ⊆ 𝑋 → 𝑡 ∈ 𝐿))) |
19 | 18 | adantr 481 | . . 3 ⊢ ((𝜑 ∧ 𝑠 ∈ (fi‘𝐵)) → (∃𝑤 ∈ 𝐵 (𝐹 “ 𝑤) ⊆ 𝑡 → (𝑡 ⊆ 𝑋 → 𝑡 ∈ 𝐿))) |
20 | 8, 19 | syld 47 | . 2 ⊢ ((𝜑 ∧ 𝑠 ∈ (fi‘𝐵)) → ((𝐹 “ 𝑠) ⊆ 𝑡 → (𝑡 ⊆ 𝑋 → 𝑡 ∈ 𝐿))) |
21 | 20 | ex 413 | 1 ⊢ (𝜑 → (𝑠 ∈ (fi‘𝐵) → ((𝐹 “ 𝑠) ⊆ 𝑡 → (𝑡 ⊆ 𝑋 → 𝑡 ∈ 𝐿)))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∈ wcel 2106 ∃wrex 3065 ⊆ wss 3887 “ cima 5592 ⟶wf 6429 ‘cfv 6433 (class class class)co 7275 ficfi 9169 fBascfbas 20585 Filcfil 22996 FilMap cfm 23084 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1o 8297 df-er 8498 df-en 8734 df-fin 8737 df-fi 9170 df-fbas 20594 df-fg 20595 df-fil 22997 df-fm 23089 |
This theorem is referenced by: fmfnfmlem4 23108 |
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