Compact Sets in the Space L~(O,

Compact Sets in the Space L~(O,
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发表时间:
2005
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通讯作者:
Jacques Simeon;Jacqves Snwo
Jacques Simeon;Jacqves Snwo
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其他
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作者:
Jacques Simeon;Jacqves Snwo

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给出了L~(0, T; B)中0]紧集的一个表征,其中1 B.利用本文的表征/或这类情形,给出了具有最优参数的6]紧性的方便条件。作为一个例子,证明了i] {f~}在~q(O, T; B)和L~oo(O, T; X)中有界,i] {~],/~ T}在L~或T中有界;Y)则{f。}在L~(O, T; B), Yp < q范围内相对紧凑。
A characterization o] compact sets in L~(0, T; B) is given, where 1 B. Using the present characterization /or this kind o] situatious, su]]ieient conditions ]or compactness are given with optimal parameters. As an example, it is proved that i] {f~} is bounded in ~q(O, T; B) and in L~oo(O, T; X) and i] {~],/~t} is bounded in L~or T; Y) then {f.} is relatively compact in L~(O, T; B), Yp < q.