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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > caragenuncl | Structured version Visualization version GIF version |
Description: The Caratheodory's construction is closed under the union. Step (c) in the proof of Theorem 113C of [Fremlin1] p. 20. (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
Ref | Expression |
---|---|
caragenuncl.1 | β’ (π β π β OutMeas) |
caragenuncl.2 | β’ π = (CaraGenβπ) |
caragenuncl.3 | β’ (π β πΈ β π) |
caragenuncl.4 | β’ (π β πΉ β π) |
Ref | Expression |
---|---|
caragenuncl | β’ (π β (πΈ βͺ πΉ) β π) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | caragenuncl.1 | . 2 β’ (π β π β OutMeas) | |
2 | eqid 2737 | . 2 β’ βͺ dom π = βͺ dom π | |
3 | caragenuncl.2 | . 2 β’ π = (CaraGenβπ) | |
4 | caragenuncl.3 | . . . . 5 β’ (π β πΈ β π) | |
5 | 1, 3, 4, 2 | caragenelss 44816 | . . . 4 β’ (π β πΈ β βͺ dom π) |
6 | caragenuncl.4 | . . . . 5 β’ (π β πΉ β π) | |
7 | 1, 3, 6, 2 | caragenelss 44816 | . . . 4 β’ (π β πΉ β βͺ dom π) |
8 | 5, 7 | unssd 4151 | . . 3 β’ (π β (πΈ βͺ πΉ) β βͺ dom π) |
9 | 1, 2 | unidmex 43332 | . . . . 5 β’ (π β βͺ dom π β V) |
10 | ssexg 5285 | . . . . 5 β’ (((πΈ βͺ πΉ) β βͺ dom π β§ βͺ dom π β V) β (πΈ βͺ πΉ) β V) | |
11 | 8, 9, 10 | syl2anc 585 | . . . 4 β’ (π β (πΈ βͺ πΉ) β V) |
12 | elpwg 4568 | . . . 4 β’ ((πΈ βͺ πΉ) β V β ((πΈ βͺ πΉ) β π« βͺ dom π β (πΈ βͺ πΉ) β βͺ dom π)) | |
13 | 11, 12 | syl 17 | . . 3 β’ (π β ((πΈ βͺ πΉ) β π« βͺ dom π β (πΈ βͺ πΉ) β βͺ dom π)) |
14 | 8, 13 | mpbird 257 | . 2 β’ (π β (πΈ βͺ πΉ) β π« βͺ dom π) |
15 | 1 | adantr 482 | . . 3 β’ ((π β§ π β π« βͺ dom π) β π β OutMeas) |
16 | 4 | adantr 482 | . . 3 β’ ((π β§ π β π« βͺ dom π) β πΈ β π) |
17 | 6 | adantr 482 | . . 3 β’ ((π β§ π β π« βͺ dom π) β πΉ β π) |
18 | elpwi 4572 | . . . 4 β’ (π β π« βͺ dom π β π β βͺ dom π) | |
19 | 18 | adantl 483 | . . 3 β’ ((π β§ π β π« βͺ dom π) β π β βͺ dom π) |
20 | 15, 3, 16, 17, 2, 19 | caragenuncllem 44827 | . 2 β’ ((π β§ π β π« βͺ dom π) β ((πβ(π β© (πΈ βͺ πΉ))) +π (πβ(π β (πΈ βͺ πΉ)))) = (πβπ)) |
21 | 1, 2, 3, 14, 20 | carageneld 44817 | 1 β’ (π β (πΈ βͺ πΉ) β π) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 β wb 205 β§ wa 397 = wceq 1542 β wcel 2107 Vcvv 3448 βͺ cun 3913 β wss 3915 π« cpw 4565 βͺ cuni 4870 dom cdm 5638 βcfv 6501 OutMeascome 44804 CaraGenccaragen 44806 |
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 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2708 ax-sep 5261 ax-nul 5268 ax-pow 5325 ax-pr 5389 ax-un 7677 ax-cnex 11114 ax-resscn 11115 ax-1cn 11116 ax-icn 11117 ax-addcl 11118 ax-addrcl 11119 ax-mulcl 11120 ax-addass 11123 ax-i2m1 11126 ax-rnegex 11129 ax-cnre 11131 ax-pre-lttri 11132 ax-pre-lttrn 11133 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2815 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3066 df-rex 3075 df-rab 3411 df-v 3450 df-sbc 3745 df-csb 3861 df-dif 3918 df-un 3920 df-in 3922 df-ss 3932 df-nul 4288 df-if 4492 df-pw 4567 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4871 df-iun 4961 df-br 5111 df-opab 5173 df-mpt 5194 df-id 5536 df-po 5550 df-so 5551 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-iota 6453 df-fun 6503 df-fn 6504 df-f 6505 df-f1 6506 df-fo 6507 df-f1o 6508 df-fv 6509 df-ov 7365 df-oprab 7366 df-mpo 7367 df-1st 7926 df-2nd 7927 df-er 8655 df-en 8891 df-dom 8892 df-sdom 8893 df-pnf 11198 df-mnf 11199 df-xr 11200 df-ltxr 11201 df-le 11202 df-xadd 13041 df-icc 13278 df-ome 44805 df-caragen 44807 |
This theorem is referenced by: caragenfiiuncl 44830 |
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