Step | Hyp | Ref
| Expression |
1 | | dvfcn 25417 |
. . . 4
β’ (β
D (π₯ β (β
β {0}) β¦ (π΄ /
π₯))):dom (β D (π₯ β (β β {0})
β¦ (π΄ / π₯)))βΆβ |
2 | | ssidd 4005 |
. . . . . . 7
β’ (π΄ β β β β
β β) |
3 | | eldifsn 4790 |
. . . . . . . . 9
β’ (π₯ β (β β {0})
β (π₯ β β
β§ π₯ β
0)) |
4 | | divcl 11875 |
. . . . . . . . . 10
β’ ((π΄ β β β§ π₯ β β β§ π₯ β 0) β (π΄ / π₯) β β) |
5 | 4 | 3expb 1121 |
. . . . . . . . 9
β’ ((π΄ β β β§ (π₯ β β β§ π₯ β 0)) β (π΄ / π₯) β β) |
6 | 3, 5 | sylan2b 595 |
. . . . . . . 8
β’ ((π΄ β β β§ π₯ β (β β {0}))
β (π΄ / π₯) β
β) |
7 | 6 | fmpttd 7112 |
. . . . . . 7
β’ (π΄ β β β (π₯ β (β β {0})
β¦ (π΄ / π₯)):(β β
{0})βΆβ) |
8 | | difssd 4132 |
. . . . . . 7
β’ (π΄ β β β (β
β {0}) β β) |
9 | 2, 7, 8 | dvbss 25410 |
. . . . . 6
β’ (π΄ β β β dom
(β D (π₯ β
(β β {0}) β¦ (π΄ / π₯))) β (β β
{0})) |
10 | | simpr 486 |
. . . . . . . . 9
β’ ((π΄ β β β§ π¦ β (β β {0}))
β π¦ β (β
β {0})) |
11 | | eqid 2733 |
. . . . . . . . . . 11
β’
(TopOpenββfld) =
(TopOpenββfld) |
12 | 11 | cnfldtop 24292 |
. . . . . . . . . 10
β’
(TopOpenββfld) β Top |
13 | 11 | cnfldhaus 24293 |
. . . . . . . . . . . 12
β’
(TopOpenββfld) β Haus |
14 | | 0cn 11203 |
. . . . . . . . . . . 12
β’ 0 β
β |
15 | | unicntop 24294 |
. . . . . . . . . . . . 13
β’ β =
βͺ
(TopOpenββfld) |
16 | 15 | sncld 22867 |
. . . . . . . . . . . 12
β’
(((TopOpenββfld) β Haus β§ 0 β
β) β {0} β
(Clsdβ(TopOpenββfld))) |
17 | 13, 14, 16 | mp2an 691 |
. . . . . . . . . . 11
β’ {0}
β (Clsdβ(TopOpenββfld)) |
18 | 15 | cldopn 22527 |
. . . . . . . . . . 11
β’ ({0}
β (Clsdβ(TopOpenββfld)) β (β
β {0}) β (TopOpenββfld)) |
19 | 17, 18 | ax-mp 5 |
. . . . . . . . . 10
β’ (β
β {0}) β (TopOpenββfld) |
20 | | isopn3i 22578 |
. . . . . . . . . 10
β’
(((TopOpenββfld) β Top β§ (β
β {0}) β (TopOpenββfld)) β
((intβ(TopOpenββfld))β(β β {0}))
= (β β {0})) |
21 | 12, 19, 20 | mp2an 691 |
. . . . . . . . 9
β’
((intβ(TopOpenββfld))β(β
β {0})) = (β β {0}) |
22 | 10, 21 | eleqtrrdi 2845 |
. . . . . . . 8
β’ ((π΄ β β β§ π¦ β (β β {0}))
β π¦ β
((intβ(TopOpenββfld))β(β β
{0}))) |
23 | | eldifi 4126 |
. . . . . . . . . . . . . . . 16
β’ (π¦ β (β β {0})
β π¦ β
β) |
24 | 23 | adantl 483 |
. . . . . . . . . . . . . . 15
β’ ((π΄ β β β§ π¦ β (β β {0}))
β π¦ β
β) |
25 | 24 | sqvald 14105 |
. . . . . . . . . . . . . 14
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π¦β2) = (π¦ Β· π¦)) |
26 | 25 | oveq2d 7422 |
. . . . . . . . . . . . 13
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π΄ / (π¦β2)) = (π΄ / (π¦ Β· π¦))) |
27 | | simpl 484 |
. . . . . . . . . . . . . 14
β’ ((π΄ β β β§ π¦ β (β β {0}))
β π΄ β
β) |
28 | | eldifsni 4793 |
. . . . . . . . . . . . . . 15
β’ (π¦ β (β β {0})
β π¦ β
0) |
29 | 28 | adantl 483 |
. . . . . . . . . . . . . 14
β’ ((π΄ β β β§ π¦ β (β β {0}))
β π¦ β
0) |
30 | 27, 24, 24, 29, 29 | divdiv1d 12018 |
. . . . . . . . . . . . 13
β’ ((π΄ β β β§ π¦ β (β β {0}))
β ((π΄ / π¦) / π¦) = (π΄ / (π¦ Β· π¦))) |
31 | 26, 30 | eqtr4d 2776 |
. . . . . . . . . . . 12
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π΄ / (π¦β2)) = ((π΄ / π¦) / π¦)) |
32 | 31 | negeqd 11451 |
. . . . . . . . . . 11
β’ ((π΄ β β β§ π¦ β (β β {0}))
β -(π΄ / (π¦β2)) = -((π΄ / π¦) / π¦)) |
33 | 27, 24, 29 | divcld 11987 |
. . . . . . . . . . . 12
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π΄ / π¦) β
β) |
34 | 33, 24, 29 | divnegd 12000 |
. . . . . . . . . . 11
β’ ((π΄ β β β§ π¦ β (β β {0}))
β -((π΄ / π¦) / π¦) = (-(π΄ / π¦) / π¦)) |
35 | 32, 34 | eqtrd 2773 |
. . . . . . . . . 10
β’ ((π΄ β β β§ π¦ β (β β {0}))
β -(π΄ / (π¦β2)) = (-(π΄ / π¦) / π¦)) |
36 | 33 | negcld 11555 |
. . . . . . . . . . . 12
β’ ((π΄ β β β§ π¦ β (β β {0}))
β -(π΄ / π¦) β
β) |
37 | | eqid 2733 |
. . . . . . . . . . . . 13
β’ (π§ β (β β {0})
β¦ (-(π΄ / π¦) / π§)) = (π§ β (β β {0}) β¦
(-(π΄ / π¦) / π§)) |
38 | 37 | cdivcncf 24429 |
. . . . . . . . . . . 12
β’ (-(π΄ / π¦) β β β (π§ β (β β {0}) β¦
(-(π΄ / π¦) / π§)) β ((β β {0})βcnββ)) |
39 | 36, 38 | syl 17 |
. . . . . . . . . . 11
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π§ β (β
β {0}) β¦ (-(π΄ /
π¦) / π§)) β ((β β {0})βcnββ)) |
40 | | oveq2 7414 |
. . . . . . . . . . 11
β’ (π§ = π¦ β (-(π΄ / π¦) / π§) = (-(π΄ / π¦) / π¦)) |
41 | 39, 10, 40 | cnmptlimc 25399 |
. . . . . . . . . 10
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (-(π΄ / π¦) / π¦) β ((π§ β (β β {0}) β¦
(-(π΄ / π¦) / π§)) limβ π¦)) |
42 | 35, 41 | eqeltrd 2834 |
. . . . . . . . 9
β’ ((π΄ β β β§ π¦ β (β β {0}))
β -(π΄ / (π¦β2)) β ((π§ β (β β {0})
β¦ (-(π΄ / π¦) / π§)) limβ π¦)) |
43 | | cncff 24401 |
. . . . . . . . . . . 12
β’ ((π§ β (β β {0})
β¦ (-(π΄ / π¦) / π§)) β ((β β {0})βcnββ) β (π§ β (β β {0}) β¦
(-(π΄ / π¦) / π§)):(β β
{0})βΆβ) |
44 | 39, 43 | syl 17 |
. . . . . . . . . . 11
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π§ β (β
β {0}) β¦ (-(π΄ /
π¦) / π§)):(β β
{0})βΆβ) |
45 | 44 | limcdif 25385 |
. . . . . . . . . 10
β’ ((π΄ β β β§ π¦ β (β β {0}))
β ((π§ β (β
β {0}) β¦ (-(π΄ /
π¦) / π§)) limβ π¦) = (((π§ β (β β {0}) β¦
(-(π΄ / π¦) / π§)) βΎ ((β β {0}) β
{π¦})) limβ
π¦)) |
46 | | eldifi 4126 |
. . . . . . . . . . . . . . . . . . . 20
β’ (π§ β ((β β {0})
β {π¦}) β π§ β (β β
{0})) |
47 | 46 | adantl 483 |
. . . . . . . . . . . . . . . . . . 19
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β π§ β (β
β {0})) |
48 | 47 | eldifad 3960 |
. . . . . . . . . . . . . . . . . 18
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β π§ β
β) |
49 | 23 | ad2antlr 726 |
. . . . . . . . . . . . . . . . . 18
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β π¦ β
β) |
50 | 48, 49 | subcld 11568 |
. . . . . . . . . . . . . . . . 17
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (π§ β π¦) β
β) |
51 | 33 | adantr 482 |
. . . . . . . . . . . . . . . . . 18
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (π΄ / π¦) β
β) |
52 | | eldifsni 4793 |
. . . . . . . . . . . . . . . . . . 19
β’ (π§ β (β β {0})
β π§ β
0) |
53 | 47, 52 | syl 17 |
. . . . . . . . . . . . . . . . . 18
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β π§ β
0) |
54 | 51, 48, 53 | divcld 11987 |
. . . . . . . . . . . . . . . . 17
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((π΄ / π¦) / π§) β β) |
55 | | mulneg12 11649 |
. . . . . . . . . . . . . . . . 17
β’ (((π§ β π¦) β β β§ ((π΄ / π¦) / π§) β β) β (-(π§ β π¦) Β· ((π΄ / π¦) / π§)) = ((π§ β π¦) Β· -((π΄ / π¦) / π§))) |
56 | 50, 54, 55 | syl2anc 585 |
. . . . . . . . . . . . . . . 16
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (-(π§ β π¦) Β· ((π΄ / π¦) / π§)) = ((π§ β π¦) Β· -((π΄ / π¦) / π§))) |
57 | 49, 48, 54 | subdird 11668 |
. . . . . . . . . . . . . . . . 17
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((π¦ β π§) Β· ((π΄ / π¦) / π§)) = ((π¦ Β· ((π΄ / π¦) / π§)) β (π§ Β· ((π΄ / π¦) / π§)))) |
58 | 48, 49 | negsubdi2d 11584 |
. . . . . . . . . . . . . . . . . 18
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β -(π§ β π¦) = (π¦ β π§)) |
59 | 58 | oveq1d 7421 |
. . . . . . . . . . . . . . . . 17
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (-(π§ β π¦) Β· ((π΄ / π¦) / π§)) = ((π¦ β π§) Β· ((π΄ / π¦) / π§))) |
60 | | oveq2 7414 |
. . . . . . . . . . . . . . . . . . . . 21
β’ (π₯ = π§ β (π΄ / π₯) = (π΄ / π§)) |
61 | | eqid 2733 |
. . . . . . . . . . . . . . . . . . . . 21
β’ (π₯ β (β β {0})
β¦ (π΄ / π₯)) = (π₯ β (β β {0}) β¦ (π΄ / π₯)) |
62 | | ovex 7439 |
. . . . . . . . . . . . . . . . . . . . 21
β’ (π΄ / π§) β V |
63 | 60, 61, 62 | fvmpt 6996 |
. . . . . . . . . . . . . . . . . . . 20
β’ (π§ β (β β {0})
β ((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ§) = (π΄ / π§)) |
64 | 47, 63 | syl 17 |
. . . . . . . . . . . . . . . . . . 19
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ§) = (π΄ / π§)) |
65 | | simpll 766 |
. . . . . . . . . . . . . . . . . . . . 21
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β π΄ β
β) |
66 | 28 | ad2antlr 726 |
. . . . . . . . . . . . . . . . . . . . 21
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β π¦ β
0) |
67 | 65, 49, 66 | divcan2d 11989 |
. . . . . . . . . . . . . . . . . . . 20
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (π¦ Β· (π΄ / π¦)) = π΄) |
68 | 67 | oveq1d 7421 |
. . . . . . . . . . . . . . . . . . 19
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((π¦ Β· (π΄ / π¦)) / π§) = (π΄ / π§)) |
69 | 49, 51, 48, 53 | divassd 12022 |
. . . . . . . . . . . . . . . . . . 19
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((π¦ Β· (π΄ / π¦)) / π§) = (π¦ Β· ((π΄ / π¦) / π§))) |
70 | 64, 68, 69 | 3eqtr2d 2779 |
. . . . . . . . . . . . . . . . . 18
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ§) = (π¦ Β· ((π΄ / π¦) / π§))) |
71 | | oveq2 7414 |
. . . . . . . . . . . . . . . . . . . . 21
β’ (π₯ = π¦ β (π΄ / π₯) = (π΄ / π¦)) |
72 | | ovex 7439 |
. . . . . . . . . . . . . . . . . . . . 21
β’ (π΄ / π¦) β V |
73 | 71, 61, 72 | fvmpt 6996 |
. . . . . . . . . . . . . . . . . . . 20
β’ (π¦ β (β β {0})
β ((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ¦) = (π΄ / π¦)) |
74 | 73 | ad2antlr 726 |
. . . . . . . . . . . . . . . . . . 19
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ¦) = (π΄ / π¦)) |
75 | 51, 48, 53 | divcan2d 11989 |
. . . . . . . . . . . . . . . . . . 19
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (π§ Β· ((π΄ / π¦) / π§)) = (π΄ / π¦)) |
76 | 74, 75 | eqtr4d 2776 |
. . . . . . . . . . . . . . . . . 18
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ¦) = (π§ Β· ((π΄ / π¦) / π§))) |
77 | 70, 76 | oveq12d 7424 |
. . . . . . . . . . . . . . . . 17
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) = ((π¦ Β· ((π΄ / π¦) / π§)) β (π§ Β· ((π΄ / π¦) / π§)))) |
78 | 57, 59, 77 | 3eqtr4d 2783 |
. . . . . . . . . . . . . . . 16
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (-(π§ β π¦) Β· ((π΄ / π¦) / π§)) = (((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦))) |
79 | 51, 48, 53 | divnegd 12000 |
. . . . . . . . . . . . . . . . 17
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β -((π΄ / π¦) / π§) = (-(π΄ / π¦) / π§)) |
80 | 79 | oveq2d 7422 |
. . . . . . . . . . . . . . . 16
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((π§ β π¦) Β· -((π΄ / π¦) / π§)) = ((π§ β π¦) Β· (-(π΄ / π¦) / π§))) |
81 | 56, 78, 80 | 3eqtr3d 2781 |
. . . . . . . . . . . . . . 15
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) = ((π§ β π¦) Β· (-(π΄ / π¦) / π§))) |
82 | 81 | oveq1d 7421 |
. . . . . . . . . . . . . 14
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((((π₯ β
(β β {0}) β¦ (π΄ / π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦)) = (((π§ β π¦) Β· (-(π΄ / π¦) / π§)) / (π§ β π¦))) |
83 | 51 | negcld 11555 |
. . . . . . . . . . . . . . . 16
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β -(π΄ / π¦) β
β) |
84 | 83, 48, 53 | divcld 11987 |
. . . . . . . . . . . . . . 15
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (-(π΄ / π¦) / π§) β β) |
85 | | eldifsni 4793 |
. . . . . . . . . . . . . . . . 17
β’ (π§ β ((β β {0})
β {π¦}) β π§ β π¦) |
86 | 85 | adantl 483 |
. . . . . . . . . . . . . . . 16
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β π§ β π¦) |
87 | 48, 49, 86 | subne0d 11577 |
. . . . . . . . . . . . . . 15
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (π§ β π¦) β 0) |
88 | 84, 50, 87 | divcan3d 11992 |
. . . . . . . . . . . . . 14
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β (((π§ β π¦) Β· (-(π΄ / π¦) / π§)) / (π§ β π¦)) = (-(π΄ / π¦) / π§)) |
89 | 82, 88 | eqtrd 2773 |
. . . . . . . . . . . . 13
β’ (((π΄ β β β§ π¦ β (β β {0}))
β§ π§ β ((β
β {0}) β {π¦}))
β ((((π₯ β
(β β {0}) β¦ (π΄ / π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦)) = (-(π΄ / π¦) / π§)) |
90 | 89 | mpteq2dva 5248 |
. . . . . . . . . . . 12
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π§ β ((β
β {0}) β {π¦})
β¦ ((((π₯ β
(β β {0}) β¦ (π΄ / π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦))) = (π§ β ((β β {0}) β {π¦}) β¦ (-(π΄ / π¦) / π§))) |
91 | | difss 4131 |
. . . . . . . . . . . . 13
β’ ((β
β {0}) β {π¦})
β (β β {0}) |
92 | | resmpt 6036 |
. . . . . . . . . . . . 13
β’
(((β β {0}) β {π¦}) β (β β {0}) β
((π§ β (β β
{0}) β¦ (-(π΄ / π¦) / π§)) βΎ ((β β {0}) β
{π¦})) = (π§ β ((β β {0}) β {π¦}) β¦ (-(π΄ / π¦) / π§))) |
93 | 91, 92 | ax-mp 5 |
. . . . . . . . . . . 12
β’ ((π§ β (β β {0})
β¦ (-(π΄ / π¦) / π§)) βΎ ((β β {0}) β
{π¦})) = (π§ β ((β β {0}) β {π¦}) β¦ (-(π΄ / π¦) / π§)) |
94 | 90, 93 | eqtr4di 2791 |
. . . . . . . . . . 11
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π§ β ((β
β {0}) β {π¦})
β¦ ((((π₯ β
(β β {0}) β¦ (π΄ / π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦))) = ((π§ β (β β {0}) β¦
(-(π΄ / π¦) / π§)) βΎ ((β β {0}) β
{π¦}))) |
95 | 94 | oveq1d 7421 |
. . . . . . . . . 10
β’ ((π΄ β β β§ π¦ β (β β {0}))
β ((π§ β ((β
β {0}) β {π¦})
β¦ ((((π₯ β
(β β {0}) β¦ (π΄ / π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦))) limβ π¦) = (((π§ β (β β {0}) β¦
(-(π΄ / π¦) / π§)) βΎ ((β β {0}) β
{π¦})) limβ
π¦)) |
96 | 45, 95 | eqtr4d 2776 |
. . . . . . . . 9
β’ ((π΄ β β β§ π¦ β (β β {0}))
β ((π§ β (β
β {0}) β¦ (-(π΄ /
π¦) / π§)) limβ π¦) = ((π§ β ((β β {0}) β {π¦}) β¦ ((((π₯ β (β β {0})
β¦ (π΄ / π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦))) limβ π¦)) |
97 | 42, 96 | eleqtrd 2836 |
. . . . . . . 8
β’ ((π΄ β β β§ π¦ β (β β {0}))
β -(π΄ / (π¦β2)) β ((π§ β ((β β {0})
β {π¦}) β¦
((((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦))) limβ π¦)) |
98 | 11 | cnfldtopon 24291 |
. . . . . . . . . 10
β’
(TopOpenββfld) β
(TopOnββ) |
99 | 98 | toponrestid 22415 |
. . . . . . . . 9
β’
(TopOpenββfld) =
((TopOpenββfld) βΎt
β) |
100 | | eqid 2733 |
. . . . . . . . 9
β’ (π§ β ((β β {0})
β {π¦}) β¦
((((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦))) = (π§ β ((β β {0}) β {π¦}) β¦ ((((π₯ β (β β {0})
β¦ (π΄ / π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦))) |
101 | | ssidd 4005 |
. . . . . . . . 9
β’ ((π΄ β β β§ π¦ β (β β {0}))
β β β β) |
102 | 7 | adantr 482 |
. . . . . . . . 9
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π₯ β (β
β {0}) β¦ (π΄ /
π₯)):(β β
{0})βΆβ) |
103 | | difssd 4132 |
. . . . . . . . 9
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (β β {0}) β β) |
104 | 99, 11, 100, 101, 102, 103 | eldv 25407 |
. . . . . . . 8
β’ ((π΄ β β β§ π¦ β (β β {0}))
β (π¦(β D (π₯ β (β β {0})
β¦ (π΄ / π₯)))-(π΄ / (π¦β2)) β (π¦ β
((intβ(TopOpenββfld))β(β β {0}))
β§ -(π΄ / (π¦β2)) β ((π§ β ((β β {0})
β {π¦}) β¦
((((π₯ β (β
β {0}) β¦ (π΄ /
π₯))βπ§) β ((π₯ β (β β {0}) β¦ (π΄ / π₯))βπ¦)) / (π§ β π¦))) limβ π¦)))) |
105 | 22, 97, 104 | mpbir2and 712 |
. . . . . . 7
β’ ((π΄ β β β§ π¦ β (β β {0}))
β π¦(β D (π₯ β (β β {0})
β¦ (π΄ / π₯)))-(π΄ / (π¦β2))) |
106 | | vex 3479 |
. . . . . . . 8
β’ π¦ β V |
107 | | negex 11455 |
. . . . . . . 8
β’ -(π΄ / (π¦β2)) β V |
108 | 106, 107 | breldm 5907 |
. . . . . . 7
β’ (π¦(β D (π₯ β (β β {0}) β¦ (π΄ / π₯)))-(π΄ / (π¦β2)) β π¦ β dom (β D (π₯ β (β β {0}) β¦ (π΄ / π₯)))) |
109 | 105, 108 | syl 17 |
. . . . . 6
β’ ((π΄ β β β§ π¦ β (β β {0}))
β π¦ β dom
(β D (π₯ β
(β β {0}) β¦ (π΄ / π₯)))) |
110 | 9, 109 | eqelssd 4003 |
. . . . 5
β’ (π΄ β β β dom
(β D (π₯ β
(β β {0}) β¦ (π΄ / π₯))) = (β β {0})) |
111 | 110 | feq2d 6701 |
. . . 4
β’ (π΄ β β β ((β
D (π₯ β (β
β {0}) β¦ (π΄ /
π₯))):dom (β D (π₯ β (β β {0})
β¦ (π΄ / π₯)))βΆβ β
(β D (π₯ β
(β β {0}) β¦ (π΄ / π₯))):(β β
{0})βΆβ)) |
112 | 1, 111 | mpbii 232 |
. . 3
β’ (π΄ β β β (β
D (π₯ β (β
β {0}) β¦ (π΄ /
π₯))):(β β
{0})βΆβ) |
113 | 112 | ffnd 6716 |
. 2
β’ (π΄ β β β (β
D (π₯ β (β
β {0}) β¦ (π΄ /
π₯))) Fn (β β
{0})) |
114 | | negex 11455 |
. . . 4
β’ -(π΄ / (π₯β2)) β V |
115 | 114 | rgenw 3066 |
. . 3
β’
βπ₯ β
(β β {0})-(π΄ /
(π₯β2)) β
V |
116 | | eqid 2733 |
. . . 4
β’ (π₯ β (β β {0})
β¦ -(π΄ / (π₯β2))) = (π₯ β (β β {0}) β¦ -(π΄ / (π₯β2))) |
117 | 116 | fnmpt 6688 |
. . 3
β’
(βπ₯ β
(β β {0})-(π΄ /
(π₯β2)) β V β
(π₯ β (β β
{0}) β¦ -(π΄ / (π₯β2))) Fn (β β
{0})) |
118 | 115, 117 | mp1i 13 |
. 2
β’ (π΄ β β β (π₯ β (β β {0})
β¦ -(π΄ / (π₯β2))) Fn (β β
{0})) |
119 | | ffun 6718 |
. . . . 5
β’ ((β
D (π₯ β (β
β {0}) β¦ (π΄ /
π₯))):dom (β D (π₯ β (β β {0})
β¦ (π΄ / π₯)))βΆβ β Fun
(β D (π₯ β
(β β {0}) β¦ (π΄ / π₯)))) |
120 | 1, 119 | mp1i 13 |
. . . 4
β’ ((π΄ β β β§ π¦ β (β β {0}))
β Fun (β D (π₯
β (β β {0}) β¦ (π΄ / π₯)))) |
121 | | funbrfv 6940 |
. . . 4
β’ (Fun
(β D (π₯ β
(β β {0}) β¦ (π΄ / π₯))) β (π¦(β D (π₯ β (β β {0}) β¦ (π΄ / π₯)))-(π΄ / (π¦β2)) β ((β D (π₯ β (β β {0})
β¦ (π΄ / π₯)))βπ¦) = -(π΄ / (π¦β2)))) |
122 | 120, 105,
121 | sylc 65 |
. . 3
β’ ((π΄ β β β§ π¦ β (β β {0}))
β ((β D (π₯
β (β β {0}) β¦ (π΄ / π₯)))βπ¦) = -(π΄ / (π¦β2))) |
123 | | oveq1 7413 |
. . . . . . 7
β’ (π₯ = π¦ β (π₯β2) = (π¦β2)) |
124 | 123 | oveq2d 7422 |
. . . . . 6
β’ (π₯ = π¦ β (π΄ / (π₯β2)) = (π΄ / (π¦β2))) |
125 | 124 | negeqd 11451 |
. . . . 5
β’ (π₯ = π¦ β -(π΄ / (π₯β2)) = -(π΄ / (π¦β2))) |
126 | 125, 116,
107 | fvmpt 6996 |
. . . 4
β’ (π¦ β (β β {0})
β ((π₯ β (β
β {0}) β¦ -(π΄ /
(π₯β2)))βπ¦) = -(π΄ / (π¦β2))) |
127 | 126 | adantl 483 |
. . 3
β’ ((π΄ β β β§ π¦ β (β β {0}))
β ((π₯ β (β
β {0}) β¦ -(π΄ /
(π₯β2)))βπ¦) = -(π΄ / (π¦β2))) |
128 | 122, 127 | eqtr4d 2776 |
. 2
β’ ((π΄ β β β§ π¦ β (β β {0}))
β ((β D (π₯
β (β β {0}) β¦ (π΄ / π₯)))βπ¦) = ((π₯ β (β β {0}) β¦ -(π΄ / (π₯β2)))βπ¦)) |
129 | 113, 118,
128 | eqfnfvd 7033 |
1
β’ (π΄ β β β (β
D (π₯ β (β
β {0}) β¦ (π΄ /
π₯))) = (π₯ β (β β {0}) β¦ -(π΄ / (π₯β2)))) |