The Orlicz space equipped with the Φ-Amemiya norm contains an order asymptotically isometric copy of c0
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摘要: 在Orlicz空间中, 我们引进了一个与Luxemburg范数等价的新范数—赋Φ-Amemiya范数:
${\left\| x \right\|_{\Phi ,{\Phi _1}}} = \inf \left\{ {\frac{1}{k}\left( {1 + \Phi \left( {{{ I}_{{\Phi _1}}}\left( {kx} \right)} \right)} \right)} \right\}$ . 并证明了由此范数构成的Orlicz函数空间$\left\{ {{L_{\Phi ,{\Phi _{\rm{1}}}}},{{\left\| \cdot \right\|}_{\Phi ,{\Phi _1}}}} \right\}$ 是Banach空间. 据此得到了赋Φ-Amemiya范数的Orlicz空间包含序渐近等距c0复本的条件.-
关键词:
- Orlicz空间 /
- Amemiya范数 /
- Δ2条件 /
- c0的序渐近等距复本
Abstract: In Orlicz space, a new norm that is equivalent to the Luxemburg norm is introduced. It is called the Φ-Amemiya norm:${\left\| x \right\|_{\Phi ,{\Phi _1}}} = \inf \left\{ {\frac{1}{k}\left( {1 + \Phi \left( {{{ I}_{{\Phi _1}}}\left( {kx} \right)} \right)} \right)} \right\}$ . It is shown, furthermore, that the Orlicz function space equipped with this norm$\left\{ {{L_{\Phi ,{\Phi _{\rm{1}}}}},{{\left\| \cdot \right\|}_{\Phi ,{\Phi _1}}}} \right\}$ is a Banach space. Hence, this paper demonstrates the conditions for the Orlicz space with the Φ-Amemiya norm to contain an asymptotically isometric copy of c0.-
Key words:
- Orlicz space /
- Amemiya norm /
- condition Δ2 /
- order asymptotically isometric copy of c0
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