Step | Hyp | Ref
| Expression |
1 | | sxbrsiga.0 |
. . 3
β’ π½ = (topGenβran
(,)) |
2 | | dya2ioc.1 |
. . 3
β’ πΌ = (π₯ β β€, π β β€ β¦ ((π₯ / (2βπ))[,)((π₯ + 1) / (2βπ)))) |
3 | 1, 2 | dya2iocival 33261 |
. 2
β’ ((π β β€ β§ π β β€) β (ππΌπ) = ((π / (2βπ))[,)((π + 1) / (2βπ)))) |
4 | | mnfxr 11268 |
. . . . 5
β’ -β
β β* |
5 | 4 | a1i 11 |
. . . 4
β’ ((π β β€ β§ π β β€) β -β
β β*) |
6 | | simpr 486 |
. . . . . . 7
β’ ((π β β€ β§ π β β€) β π β
β€) |
7 | 6 | zred 12663 |
. . . . . 6
β’ ((π β β€ β§ π β β€) β π β
β) |
8 | | 2rp 12976 |
. . . . . . . 8
β’ 2 β
β+ |
9 | 8 | a1i 11 |
. . . . . . 7
β’ ((π β β€ β§ π β β€) β 2 β
β+) |
10 | | simpl 484 |
. . . . . . 7
β’ ((π β β€ β§ π β β€) β π β
β€) |
11 | 9, 10 | rpexpcld 14207 |
. . . . . 6
β’ ((π β β€ β§ π β β€) β
(2βπ) β
β+) |
12 | 7, 11 | rerpdivcld 13044 |
. . . . 5
β’ ((π β β€ β§ π β β€) β (π / (2βπ)) β β) |
13 | 12 | rexrd 11261 |
. . . 4
β’ ((π β β€ β§ π β β€) β (π / (2βπ)) β
β*) |
14 | | 1red 11212 |
. . . . . . 7
β’ ((π β β€ β§ π β β€) β 1 β
β) |
15 | 7, 14 | readdcld 11240 |
. . . . . 6
β’ ((π β β€ β§ π β β€) β (π + 1) β
β) |
16 | 15, 11 | rerpdivcld 13044 |
. . . . 5
β’ ((π β β€ β§ π β β€) β ((π + 1) / (2βπ)) β
β) |
17 | 16 | rexrd 11261 |
. . . 4
β’ ((π β β€ β§ π β β€) β ((π + 1) / (2βπ)) β
β*) |
18 | | mnflt 13100 |
. . . . 5
β’ ((π / (2βπ)) β β β -β <
(π / (2βπ))) |
19 | 12, 18 | syl 17 |
. . . 4
β’ ((π β β€ β§ π β β€) β -β
< (π / (2βπ))) |
20 | | difioo 31981 |
. . . 4
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)))) |
21 | 5, 13, 17, 19, 20 | syl31anc 1374 |
. . 3
β’ ((π β β€ β§ π β β€) β
((-β(,)((π + 1) /
(2βπ))) β
(-β(,)(π /
(2βπ)))) = ((π / (2βπ))[,)((π + 1) / (2βπ)))) |
22 | | brsigarn 33171 |
. . . . 5
β’
π
β β
(sigAlgebraββ) |
23 | | elrnsiga 33113 |
. . . . 5
β’
(π
β β (sigAlgebraββ) β
π
β β βͺ ran
sigAlgebra) |
24 | 22, 23 | ax-mp 5 |
. . . 4
β’
π
β β βͺ ran
sigAlgebra |
25 | | retop 24270 |
. . . . . 6
β’
(topGenβran (,)) β Top |
26 | | iooretop 24274 |
. . . . . 6
β’
(-β(,)((π + 1)
/ (2βπ))) β
(topGenβran (,)) |
27 | | elsigagen 33134 |
. . . . . 6
β’
(((topGenβran (,)) β Top β§ (-β(,)((π + 1) / (2βπ))) β (topGenβran
(,))) β (-β(,)((π + 1) / (2βπ))) β (sigaGenβ(topGenβran
(,)))) |
28 | 25, 26, 27 | mp2an 691 |
. . . . 5
β’
(-β(,)((π + 1)
/ (2βπ))) β
(sigaGenβ(topGenβran (,))) |
29 | | df-brsiga 33169 |
. . . . 5
β’
π
β = (sigaGenβ(topGenβran
(,))) |
30 | 28, 29 | eleqtrri 2833 |
. . . 4
β’
(-β(,)((π + 1)
/ (2βπ))) β
π
β |
31 | | iooretop 24274 |
. . . . . 6
β’
(-β(,)(π /
(2βπ))) β
(topGenβran (,)) |
32 | | elsigagen 33134 |
. . . . . 6
β’
(((topGenβran (,)) β Top β§ (-β(,)(π / (2βπ))) β (topGenβran (,))) β
(-β(,)(π /
(2βπ))) β
(sigaGenβ(topGenβran (,)))) |
33 | 25, 31, 32 | mp2an 691 |
. . . . 5
β’
(-β(,)(π /
(2βπ))) β
(sigaGenβ(topGenβran (,))) |
34 | 33, 29 | eleqtrri 2833 |
. . . 4
β’
(-β(,)(π /
(2βπ))) β
π
β |
35 | | difelsiga 33120 |
. . . 4
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) |
36 | 24, 30, 34, 35 | mp3an 1462 |
. . 3
β’
((-β(,)((π +
1) / (2βπ))) β
(-β(,)(π /
(2βπ)))) β
π
β |
37 | 21, 36 | eqeltrrdi 2843 |
. 2
β’ ((π β β€ β§ π β β€) β ((π / (2βπ))[,)((π + 1) / (2βπ))) β
π
β) |
38 | 3, 37 | eqeltrd 2834 |
1
β’ ((π β β€ β§ π β β€) β (ππΌπ) β
π
β) |