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In mathematics, a covering number is the number of spherical balls of a given size needed to completely cover a given space, with possible overlaps. Two related concepts are the packing number, the number of disjoint balls that fit in a space, and the metric entropy, the number of points that fit in a space when constrained to lie at some fixed minimum distance apart.

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  • في الرياضيات، يعتبر εالعدد الغطائي لـ الفضاء المتري (X d)، لبعض ε > 0 هو الحد الأدنى من عدد كرات لدائرة نصف قطرها يكون بحاجة لتغطية X. ويوجد مفهوم ذو صلة وهو ε- رقم التسجيل وهو الذي يُعرف بأنه الحد الأقصى لعدد الكرات المنفصلة من دائرة نصف قطرها ε تتناسب مع X. (ar)
  • In mathematics, a covering number is the number of spherical balls of a given size needed to completely cover a given space, with possible overlaps. Two related concepts are the packing number, the number of disjoint balls that fit in a space, and the metric entropy, the number of points that fit in a space when constrained to lie at some fixed minimum distance apart. (en)
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  • في الرياضيات، يعتبر εالعدد الغطائي لـ الفضاء المتري (X d)، لبعض ε > 0 هو الحد الأدنى من عدد كرات لدائرة نصف قطرها يكون بحاجة لتغطية X. ويوجد مفهوم ذو صلة وهو ε- رقم التسجيل وهو الذي يُعرف بأنه الحد الأقصى لعدد الكرات المنفصلة من دائرة نصف قطرها ε تتناسب مع X. (ar)
  • In mathematics, a covering number is the number of spherical balls of a given size needed to completely cover a given space, with possible overlaps. Two related concepts are the packing number, the number of disjoint balls that fit in a space, and the metric entropy, the number of points that fit in a space when constrained to lie at some fixed minimum distance apart. (en)
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  • عدد غطائي (ar)
  • Covering number (en)
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