The theory that Paul described in particular involves a four-dimensional space plus one time dimension, which he called the bulk. |
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Fortunately, in living systems certain conditions must be fulfilled for three-dimensional bodies to occur in four-dimensional space. |
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What exactly this means is hard to imagine, rather like trying to picture a four-dimensional cube. |
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The full four-dimensional space, or five-dimensional spacetime, is referred to as the bulk. |
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The geology of basins is a complex, four-dimensional system, of which at best we can see only small three-dimensional parts. |
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For the extreme pathway matrix of this system, there are four singular values, indicating a four-dimensional cone residing in the nine-dimensional flux space. |
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The number of basis vectors of this space can be selected freely, it needs not be four-dimensional. |
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It's also possible to picture each card as a point in four-dimensional space, where each of a point's four coordinates assumes one of three possible values. |
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One could imagine that, as a consequence of the dynamics, the extra six dimensions form a small compact space attached to each point in ordinary four-dimensional space-time. |
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Therefore, another description of this four-dimensional sphere is that it is the set of all quadruples. |
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But gravity in a four-dimensional universe would obey an inverse cube law. |
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More than a century ago, Poincaré wanted to calculate a way of classifying such three-dimensional surfaces that live in four-dimensional spaces. |
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To illustrate this question of the image requiring some advanced calculations we might also cite some four-dimensional objects made visible, optically understandable in the two-dimensional projection of a screen. |
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So why should it not be that our four-dimensional visitor, who is invisible to us because of his four dimensions, nevertheless manifests to us in three dimensions, or as a ghost which has form without substantial substance. |
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Regarded more accurately, this is not a property of space alone but of the four-dimensional continuum consisting of time and space conjointly. |
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In fact, this is the direction that the European Technology Platform takes in its strategic agenda, which gives priority to new exploration technologies for four-dimensional modelling of mineral resources. |
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The four-dimensional space is called Minkowski space-time and the curve a world line. |
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Estimation and modelling of background error covariances for global four-dimensional variational data assimilation. |
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In classical relativity theory, space-time is a four-dimensional construction wherein the three dimensions of space and one dimension of time are welded together. |
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It takes time into account, so it becomes four-dimensional. |
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But when you dream, your speech can be four-dimensional. |
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Newton's first law can be interpreted in four-dimensional space as the statement that the world lines of particles suffering no external forces are straight lines in space-time. |
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It is remarkable that the four-dimensional orthoplex is the same polytope as the four-dimensional hemicube. |
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In 1843 the Irish mathematician-astronomer William Rowan Hamilton represented four-dimensional vectors algebraically and invented the quaternions, the first noncommutative algebra to be extensively studied. |
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The emphasis is on techniques, such as Kalman filtering and four-dimensional variational assimilation, and meso-scale or regional data assimilation using Doppler radars and wind profilers. |
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The final stage of the project envisages a system of four-dimensional trajectory management based on user-preferred trajectories and self-separation between aircraft. |
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A more general four-dimensional affine transformation will take its place which has mathematical group properties as well. |
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The park has a range of attractions including Formula Rossa, the world's fastest roller coaster, and Speed of Magic, the region's first four-dimensional fantasy ride. |
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Banchoff's computer-generated images of four-dimensional hypercubes, that really persuaded him that mathematics could serve as his gateway to higher-dimensional spaces. |
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Four-dimensional fetal echocardiography can also be performed using electronic matrix array technology. |
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