1. 4-dimensional - Adjective
2. 4-dimensional - Adjective Satellite
involving or relating to the fourth dimension or time
Source: WordNet4D spacetime If we extend this to three spatial dimensions, the null geodesics are the 4-dimensional cone: : so : This null dual-cone represents the "line of sight" of a point in space. Source: Internet
A hypercube of dimension n has 2n sides (a 1-dimensional line has 2 end points; a 2-dimensional square has 4 sides or edges; a 3-dimensional cube has 6 2-dimensional faces; a 4-dimensional tesseract has 8 cells). Source: Internet
By contrast, the existence of the Prüfer surface shows that there exist two-dimensional complex manifolds (which are necessarily 4-dimensional real manifolds) with no countable base. Source: Internet
Also this may help (it has the 4-dimensional case treated separately). Source: Internet
In a series of papers with several authors, Atiyah classified all instantons on 4-dimensional Euclidean space. Source: Internet
Then the directional derivative of is a scalar defined as : where the index is summed over the appropriate number of dimensions (for example, from 1 to 3 in 3-dimensional Euclidean space, from 0 to 3 in 4-dimensional spacetime, etc.). Source: Internet