Step | Hyp | Ref
| Expression |
1 | | dya2ioc.1 |
. . . 4
β’ πΌ = (π₯ β β€, π β β€ β¦ ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ)))) |
2 | | ovex 7439 |
. . . 4
β’ ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ))) β V |
3 | 1, 2 | elrnmpo 7542 |
. . 3
β’ (π β ran πΌ β βπ₯ β β€ βπ β β€ π = ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ)))) |
4 | | simpr 486 |
. . . . . 6
β’ (((π₯ β β€ β§ π β β€) β§ π = ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ)))) β π = ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ)))) |
5 | | mnfxr 11268 |
. . . . . . . . . 10
β’ -β
β β* |
6 | 5 | a1i 11 |
. . . . . . . . 9
β’ ((π₯ β β€ β§ π β β€) β -β
β β*) |
7 | | simpl 484 |
. . . . . . . . . . . 12
β’ ((π₯ β β€ β§ π β β€) β π₯ β
β€) |
8 | 7 | zred 12663 |
. . . . . . . . . . 11
β’ ((π₯ β β€ β§ π β β€) β π₯ β
β) |
9 | | 2rp 12976 |
. . . . . . . . . . . . 13
β’ 2 β
β+ |
10 | 9 | a1i 11 |
. . . . . . . . . . . 12
β’ ((π₯ β β€ β§ π β β€) β 2 β
β+) |
11 | | simpr 486 |
. . . . . . . . . . . 12
β’ ((π₯ β β€ β§ π β β€) β π β
β€) |
12 | 10, 11 | rpexpcld 14207 |
. . . . . . . . . . 11
β’ ((π₯ β β€ β§ π β β€) β
(2βπ) β
β+) |
13 | 8, 12 | rerpdivcld 13044 |
. . . . . . . . . 10
β’ ((π₯ β β€ β§ π β β€) β (π₯ / (2βπ)) β β) |
14 | 13 | rexrd 11261 |
. . . . . . . . 9
β’ ((π₯ β β€ β§ π β β€) β (π₯ / (2βπ)) β
β*) |
15 | | 1red 11212 |
. . . . . . . . . . . 12
β’ ((π₯ β β€ β§ π β β€) β 1 β
β) |
16 | 8, 15 | readdcld 11240 |
. . . . . . . . . . 11
β’ ((π₯ β β€ β§ π β β€) β (π₯ + 1) β
β) |
17 | 16, 12 | rerpdivcld 13044 |
. . . . . . . . . 10
β’ ((π₯ β β€ β§ π β β€) β ((π₯ + 1) / (2βπ)) β
β) |
18 | 17 | rexrd 11261 |
. . . . . . . . 9
β’ ((π₯ β β€ β§ π β β€) β ((π₯ + 1) / (2βπ)) β
β*) |
19 | | mnflt 13100 |
. . . . . . . . . 10
β’ ((π₯ / (2βπ)) β β β -β < (π₯ / (2βπ))) |
20 | 13, 19 | syl 17 |
. . . . . . . . 9
β’ ((π₯ β β€ β§ π β β€) β -β
< (π₯ / (2βπ))) |
21 | | difioo 31981 |
. . . . . . . . 9
β’
(((-β β β* β§ (π₯ / (2βπ)) β β* β§ ((π₯ + 1) / (2βπ)) β β*)
β§ -β < (π₯ /
(2βπ))) β
((-β(,)((π₯ + 1) /
(2βπ))) β
(-β(,)(π₯ /
(2βπ)))) = ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ)))) |
22 | 6, 14, 18, 20, 21 | syl31anc 1374 |
. . . . . . . 8
β’ ((π₯ β β€ β§ π β β€) β
((-β(,)((π₯ + 1) /
(2βπ))) β
(-β(,)(π₯ /
(2βπ)))) = ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ)))) |
23 | | brsigarn 33171 |
. . . . . . . . . 10
β’
π
β β
(sigAlgebraββ) |
24 | | elrnsiga 33113 |
. . . . . . . . . 10
β’
(π
β β (sigAlgebraββ) β
π
β β βͺ ran
sigAlgebra) |
25 | 23, 24 | ax-mp 5 |
. . . . . . . . 9
β’
π
β β βͺ ran
sigAlgebra |
26 | | retop 24270 |
. . . . . . . . . . 11
β’
(topGenβran (,)) β Top |
27 | | iooretop 24274 |
. . . . . . . . . . 11
β’
(-β(,)((π₯ + 1)
/ (2βπ))) β
(topGenβran (,)) |
28 | | elsigagen 33134 |
. . . . . . . . . . 11
β’
(((topGenβran (,)) β Top β§ (-β(,)((π₯ + 1) / (2βπ))) β (topGenβran
(,))) β (-β(,)((π₯ + 1) / (2βπ))) β (sigaGenβ(topGenβran
(,)))) |
29 | 26, 27, 28 | mp2an 691 |
. . . . . . . . . 10
β’
(-β(,)((π₯ + 1)
/ (2βπ))) β
(sigaGenβ(topGenβran (,))) |
30 | | df-brsiga 33169 |
. . . . . . . . . 10
β’
π
β = (sigaGenβ(topGenβran
(,))) |
31 | 29, 30 | eleqtrri 2833 |
. . . . . . . . 9
β’
(-β(,)((π₯ + 1)
/ (2βπ))) β
π
β |
32 | | iooretop 24274 |
. . . . . . . . . . 11
β’
(-β(,)(π₯ /
(2βπ))) β
(topGenβran (,)) |
33 | | elsigagen 33134 |
. . . . . . . . . . 11
β’
(((topGenβran (,)) β Top β§ (-β(,)(π₯ / (2βπ))) β (topGenβran (,))) β
(-β(,)(π₯ /
(2βπ))) β
(sigaGenβ(topGenβran (,)))) |
34 | 26, 32, 33 | mp2an 691 |
. . . . . . . . . 10
β’
(-β(,)(π₯ /
(2βπ))) β
(sigaGenβ(topGenβran (,))) |
35 | 34, 30 | eleqtrri 2833 |
. . . . . . . . 9
β’
(-β(,)(π₯ /
(2βπ))) β
π
β |
36 | | difelsiga 33120 |
. . . . . . . . 9
β’
((π
β β βͺ ran
sigAlgebra β§ (-β(,)((π₯ + 1) / (2βπ))) β π
β β§
(-β(,)(π₯ /
(2βπ))) β
π
β) β ((-β(,)((π₯ + 1) / (2βπ))) β (-β(,)(π₯ / (2βπ)))) β
π
β) |
37 | 25, 31, 35, 36 | mp3an 1462 |
. . . . . . . 8
β’
((-β(,)((π₯ +
1) / (2βπ))) β
(-β(,)(π₯ /
(2βπ)))) β
π
β |
38 | 22, 37 | eqeltrrdi 2843 |
. . . . . . 7
β’ ((π₯ β β€ β§ π β β€) β ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ))) β
π
β) |
39 | 38 | adantr 482 |
. . . . . 6
β’ (((π₯ β β€ β§ π β β€) β§ π = ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ)))) β ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ))) β
π
β) |
40 | 4, 39 | eqeltrd 2834 |
. . . . 5
β’ (((π₯ β β€ β§ π β β€) β§ π = ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ)))) β π β
π
β) |
41 | 40 | ex 414 |
. . . 4
β’ ((π₯ β β€ β§ π β β€) β (π = ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ))) β π β
π
β)) |
42 | 41 | rexlimivv 3200 |
. . 3
β’
(βπ₯ β
β€ βπ β
β€ π = ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ))) β π β
π
β) |
43 | 3, 42 | sylbi 216 |
. 2
β’ (π β ran πΌ β π β
π
β) |
44 | 43 | ssriv 3986 |
1
β’ ran πΌ β
π
β |