[Everyday Mathematics]20150201
2015-01-13 13:04
363 查看
设数列 $\sed{a_n}$ 单调递减趋于零, 证明 $\dps{\vsm{n}a_n}$ 收敛当且仅当 $\dps{\vsm{n}3^k a_{3^k}}$ 收敛.
相关文章推荐
- [Everyday Mathematics]20150111
- [Everyday Mathematics]20150129
- [Everyday Mathematics]20150222
- [Everyday Mathematics]20150303
- [Everyday Mathematics]20150305
- [Everyday Mathematics]20150112
- [Everyday Mathematics]20150130
- [Everyday Mathematics]20150223
- [Everyday Mathematics]20150131
- [Everyday Mathematics]20150211 Carlson inequality
- [Everyday Mathematics]20150224
- [Everyday Mathematics]20150113
- [Everyday Mathematics]20150202
- [Everyday Mathematics]20150225
- [Everyday Mathematics]20150203
- [Everyday Mathematics]20150306
- [Everyday Mathematics]20150114
- [Everyday Mathematics]20150227
- [Everyday Mathematics]20150115
- [Everyday Mathematics]20150204