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dilation  [di'la¡¤tion || -eɪʃn]
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dilation  [dai'leiʃən]  
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In mathematics, a dilation is a function ƒ from a metric space into itself that satisfies the identity
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The dilation parameters {s_j}_j are studied for {¦×_ j,k}_ j,k={s_j¦×(s_j¡¤-kb)}_ j,k¡ÊZ being a frame for L2(R).  
·­Ò룺   Ñо¿ÁËL2(R)ÖÐС²¨¿ò¼Ü{¦×j,k}j,k={sj¦×(sj¡¤-kb)}j,k¡ÊZµÄÅòÕÍÁÐ{sj}jµÄÐÔÖÊ.  
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