[分析] 極限/數列/機率
Let
M n n
a_n = Σ | Π x_{ik} - Π y_{ik} |
ik=1 k=1 k=1
k=1,..n
where
M M
Σ x_i = Σ y_i = 1 , x_i, y_i ">" 0.
i=1 i=1
For instance,
M
a_1 = Σ | x_{i1} - y_{i1} | ,
i1=1
a_2 = Σ Σ | x_{i1} x_{i2} - y_{i1} y_{i2} | .
i1 i2
Prove or disprove that
For all ε>0, there exist δ>0
such that sup_n a_n < ε if a_1 < δ.
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12/26 12:16, , 1F
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12/26 16:23, 2F
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12/26 19:14, , 3F
12/26 19:14, 3F
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12/26 19:14, , 4F
12/26 19:14, 4F
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12/26 19:15, , 5F
12/26 19:15, 5F
※ 編輯: GSXSP (66.75.244.69), 12/26/2016 19:16:58
推
12/27 06:48, , 6F
12/27 06:48, 6F
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12/28 07:39, , 7F
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12/28 07:41, , 8F
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12/28 07:41, , 9F
12/28 07:41, 9F
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12/28 14:45, , 10F
12/28 14:45, 10F
※ 編輯: GSXSP (66.75.244.69), 12/29/2016 04:17:18
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12/29 04:20, , 11F
12/29 04:20, 11F
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