Avec SVD) pour une matrice de Hankel d'ordre 400 ,
Avec SVD) pour une matrice de Hankel d'ordre 448 ,
une norme sertàsert`sertà mesurer la distance x ? y entre deuxélémentsdeuxéléments Sur un espace vectoriel, il se peut que l'on puisse définir plusieurs normes. Cependant, si l'espace est de dimension finie, toutes les normes sontéquivalentessontéquivalentes c'est-` a-dire qu'il existera des inégalités entre elles. Par conséquent si deuxélémentsdeuxéléments sont voisins au sens d'une certaine norme, il en sera de même pour une autre norme ,
Ce genre de mécanisme est utilisé dans les standards JPEG et MPEG ,
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