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In mathematics, especially order theory, the covering relation of a partially ordered set is the binary relation which holds between comparable elements that are immediate neighbours. The covering relation is commonly used to graphically express the partial order by means of the Hasse diagram. Definition Let X {\displaystyle X} be a set with a partial order {\displaystyle \leq }. As usual, let < {\displaystyle <} be the relation on X {\displaystyle X} such that x < y {\displaystyle x<y} if and only if x y {\displaystyle x\leq y} and x y {\displaystyle x\neq y}. Let x {\displaystyle x} and y {\displaystyle y} be elements of X {\displaystyle X}. Then y {\displaystyle y} covers x {\displaystyle x}, written x y {\displaystyle x\lessdot y}, if x < y {\displaystyle x<y} and there is no element z {\displaystyle z} such that x < z < y {\displaystyle x<z<y}. Equivalently, y {\displaystyle y} covers x {\displaystyle x} if the interval [ x, y ] {\displaystyle [x, y]} is the two-element set { x, y } {\displaystyle \{x, y\}}. When x y {\displaystyle x\lessdot y}, it is said that y {\displaystyle y} is a cover of x {\displaystyle x}. Some authors also use the term cover to denote any such pair ( x, y ) {\displaystyle (x, y)} in the covering relation. Examples In a finite linearly ordered set {1, 2,..., n}, i + 1 covers i for all i between 1 and n 1 (and there are no other covering relations).
This GIF Bitmap Image Religion Coloring Pages Download Free Image is a part of Coloring Religion Category in Coloring Folder. Religion Coloring Pages Download Free Image has a Resolution of 569x773 Pixels. Religion Coloring Pages Download Free Image is of .gif (Graphics Interchange Format) Format. It's Size is 11.3KB. This GIF has been Downloaded 58 times till now. Religion Coloring Pages Download Free Image was Added on 19-07-2023. Download Religion Coloring Pages Download Free Image by clicking the button below:
Image Name: Religion Coloring Pages Download Free Image
Image Category: Coloring / Coloring Religion
Date Added: 19-07-2023
Resolution: 569x773
Format: GIF
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Size: 11.3KB