Examples of using Unit vector in English and their translations into Greek
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Regard S as consisting of unit vectors in R3.
If v is a unit vector, then Q= I- 2vvT suffices.
Using the right hand rule then the derivatives of the unit vectors are as follows.
Where êr is a unit vector in the r-direction and.
The Cartesian plane R2 is a vector space equipped with a basis consisting of a pair of unit vectors.
The unit vector basis of ℓ1 is not weakly Cauchy.
And then all of that times the unit vector in the k direction.
A unit vector w i such that the projection w i T x maximizes nongaussianity.
And then all of that times the unit vector in the i direction.
As the vectors are orthogonal this is just eiej, written eij,with unit magnitude as the vectors are unit vectors.
And then all of that times the unit vector in the y direction times j.
To generate an(n+ 1)×(n+ 1)orthogonal matrix, take an n×n one and a uniformly distributed unit vector of dimension n+ 1.
The unit vector basis of ℓp, 1< p<∞, or of c0, is another example of a weakly null sequence, i.e., a sequence that converges weakly to 0.
Corresponds to a vector rotation through an angle θ about an axis defined by a unit vector v= a1σ1+a2σ2+a3σ3.
In particular, when V is a unit vector, remains unit speed throughout, so the geodesic flow is tangent to the unit tangent bundle.
The Clifford algebra Cℓ2,0(R) is built up from a basis of one unit scalar, 1,two orthogonal unit vectors, σ1 and σ2, and one unit pseudoscalar i= σ1σ2.
The last column can be fixed to any unit vector, and each choice gives a different copy of O(n) in O(n+ 1); in this way O(n+ 1) is a bundle over the unit sphere Sn with fiber O(n).
Orthogonal matrixEdit An orthogonal matrix is a square matrix with real entries whose columns androws are orthogonal unit vectors(i.e., orthonormal vectors). .
If n= 2k+ 1,then the action of the unit vector u on the left ideal Cℓ(V, g)ω decomposes the space into a pair of isomorphic irreducible eigenspaces(both denoted by Δ), corresponding to the respective eigenvalues +1 and- 1.
Since the closed unit sphere S in R2n is compact, and f is continuous, f(S) is compact on the real line,therefore f attains a maximum on S, at some unit vector y.
The unit vector basis of ℓp, 1< p<∞, or of c0, is another example of a weakly null sequence, i.e., a sequence that converges weakly to 0. For every weakly null sequence in a Banach space, there exists a sequence of convex combinations of vectors from the given sequence that is norm-converging to 0.[29].
In Newtonian gravity, a particle of mass M creates a gravitational field g→=- G M r 2 r^{\displaystyle{\vec{g}}={\frac{- GM}{ r^{ 2}}}{\ hat{r}}},where the radial unit vector r^{\displaystyle{\hat{r}}} points away from the particle.
So the gradient of T is going to be equal to the partial derivative T with respect to x times the unit vector in the x direction, plus the partial derivative of the temperature function with respect to y times the unit vector in the y direction, plus the partial derivative of the temperature function with respect to z times the unit vector in the z direction.
Given a vector bundle E with a metric(such as the tangent bundle to a Riemannian manifold) one can construct theassociated unit sphere bundle, for which the fiber over a point x is the set of all unit vectors in Ex.
In the mathematically rigorous formulation of quantum mechanics, developed by John von Neumann, the possible states(more precisely, the pure states)of a quantum mechanical system are represented by unit vectors(called state vectors) residing in a complex separable Hilbert space, known as the state space, well defined up to a complex number of norm 1(the phase factor).
Conversely, each linear transformation f: Rn→ Rm arises from a unique m-by-n matrix A: explicitly, the(i, j)-entry of A is the ith coordinate of f(ej), where ej=(0,… ,0,1,0,… ,0)is the unit vector with 1 in the jth position and 0 elsewhere.
In the mathematically rigorous formulation of quantum mechanics, developed by Paul Dirac[7] and John von Neumann[8],the possible states of a quantum mechanical system are represented by unit vectors(called"state vectors") residing in a complex separable Hilbert space(variously called the"state space" or the"associated Hilbert space" of the system) well defined up to a complex number of norm 1(the phase factor).
The arc length parameterization of a path is equivalent to a path history made by a car driving at unit speed, so unsurprisingly the velocity v(s)is always a unit vector, and the acceleration a(s) is always perpendicular to the velocity.
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