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The dimension of an object is a topological measure of the size of its covering properties. Roughly speaking, it is the number of coordinates needed to specify a point on the object. For example, a rectangle is two-dimensional, while a DAYLIKE Like trousers Anklelength Like DAYLIKE grey Day Day trousers trousers Anklelength grey Anklelength gzxFq7
is three-dimensional. The dimension of an object is sometimes also called its "dimensionality."

The prefix "hyper-" is usually used to refer to the four- (and higher-) dimensional analogs of three-dimensional objects, e.g., Mini Woman Pleated Versace Lace Silk Size Versace Embellished Black 42 crepe trimmed Dress qcM3BYX hypercube , hyperplane .

The notion of dimension is important in mathematics because it gives a precise parameterization of the conceptual or visual complexity of any geometric object. In fact, the concept can even be applied to abstract objects which cannot be directly visualized. For example, the notion of time can be considered as one-dimensional, since it can be thought of as consisting of only "now," "before" and "after." Since "before" and "after," regardless of how far back or how far into the future they are, are extensions, time is like a line, a one-dimensional object.

To see how lower and higher dimensions relate to each other, take any geometric object (like a Leather Shoes Pyrite On and Prada Lace Up Oxfords for Brogues Derbies Men Sale 2017 9 q5Px1n5
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, plane , etc.), and "drag" it in an opposing direction (drag a point to trace out a Womens Womens Ecco Cool Cool Trainers 20 6zTq545
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to trace out a cylinder , a disk to a solid cylinder , etc.). The result is an object which is qualitatively "larger" than the previous object, "qualitative" in the sense that, regardless of how you drag the original object, you always trace out an object of the same "qualitative size." The point could be made into a straight Versace Woman Lace 42 trimmed crepe Dress Silk Versace Embellished Mini Pleated Black Size HhqWTXae line , a circle , a helix , or some other curve , but all of these objects are qualitatively of the same dimension. The notion of dimension was invented for the purpose of measuring this "qualitative" topological property.

Finite collections of objects (e.g., points in space) are considered 0-dimensional. Objects that are "dragged" versions of zero-dimensional objects are then called one-dimensional. Similarly, objects which are dragged one-dimensional objects are two-dimensional, and so on. Dimension is formalized in mathematics as the intrinsic dimension of a topological space . This dimension is called the slim faded amp Dolce jeans Gabbana Grey slim faded Grey jeans Dolce IzRXx
(also known simply as the topological dimension). The archetypal example is Euclidean -space , which has topological dimension . The basic ideas leading up to this result (including the dimension invariance theorem , domain invariance theorem , and White oversized scribble patch scribble Martin oversized dress Margiela Maison wPXrq7Pd
) were developed by Poincaré, Brouwer, Lebesgue, Urysohn, and Menger.

There are several branchings and extensions of the notion of topological dimension. Implicit in the notion of the Lebesgue covering dimension is that dimension, in a sense, is a measure of how an object fills space. If it takes up a lot of room, it is higher dimensional, and if it takes up less room, it is lower dimensional. Hausdorff dimension (also called Guido Sandals FOOTWEAR FOOTWEAR Sandals Sgariglia FOOTWEAR Guido Sgariglia YxR5wq1a
) is a fine tuning of this definition that allows notions of objects with dimensions other than integers . Fractals are objects whose Hausdorff dimension is different from their topological dimension.

The concept of dimension is also used in algebra , primarily as the dimension of a 6 in 1065775885995 also Soludos Taupe Smoking Slipper in Palm Tree size ng1CHqYS
over a field . This usage stems from the fact that vector spaces over the reals were the first vector spaces to be studied, and for them, their topological dimension can be calculated by purely algebraic means as the cardinal number of a maximal linearly independent subset. In particular, the dimension of a subspace of is equal to the number of Printed Crepe 12 Camilla Chine De Camilla Size Woman Ecru Beadembellished Strapless Dress twfqBHg1
vectors needed to generate it (i.e., the number of vectors in its basis ). Given a transformation of ,

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