Examples of using Mathbf in English and their translations into Bulgarian
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Therefore, we substitute for x{\displaystyle\mathbf{x}}.
The value of B{\displaystyle\scriptstyle\mathbf{B}} can be found from the magnetic potential.
Of particular significance is the comparison of the J{\displaystyle\scriptstyle\mathbf{J}}.
The reflection direction can be found by a reflection of d{\displaystyle\mathbf{d}} with respect to n{\displaystyle\mathbf{n}}, that is.
D l{\displaystyled\mathbf{l}} differential vector element of path length tangential to contour C enclosing surface c meters.
In vector notation, the equation of a sphere with center c{\displaystyle\mathbf{c}} and radius r{\displaystyle r} is.
Where y= s+ t d{\displaystyle\mathbf{y}=\mathbf{s}+t\mathbf{d}} is the intersection point found before.
Where t{\displaystyle t}is its distance between x{\displaystyle\mathbf{x}} and s{\displaystyle\mathbf{s}}.
Starting from Maxwell's equations and assuming that charges are either fixed ormove as a steady current J{\displaystyle\scriptstyle\mathbf{J}}.
The set of all complex numbers is denoted by C{\displaystyle\mathbf{C}}(upright bold) or C{\displaystyle\mathbb{C}}(blackboard bold).
Any value which is negative does not lie on the ray, butrather in the opposite half-line(i.e. the one starting from s{\displaystyle\mathbf{s}} with opposite direction).
Of particular significance is the comparison of the J{\displaystyle\scriptstyle\mathbf{J}} term against the∂ D/∂ t{\displaystyle\scriptstyle\partial\mathbf{D}/\partial t} term.
They are often denoted using normal vector notation(e.g., i or ı→{\displaystyle{\vec{\imath}}})rather than standard unit vector notation(e.g., ı^{\displaystyle\mathbf{\hat{\imath}}}).
In diamagnets and paramagnets, the relation is usually linear:M= χ H{\displaystyle\mathbf{M}=\chi\mathbf{H}} where χ is called the volume magnetic susceptibility.
Note that g{\displaystyle\mathbf{g}} has units of acceleration and is a vector function of location relative to the large body, independent of the magnitude(or even the presence) of the smaller mass.
Plugging this result into Faraday's Law finds a value for E{\displaystyle\scriptstyle\mathbf{E}}(which had previously been ignored).
Any point on a ray starting from point s{\displaystyle\mathbf{s}} with direction d{\displaystyle\mathbf{d}}(here d{\displaystyle\mathbf{d}} is a unit vector) can be written as.
The four-spin of a particle is defined in the rest frame of a particle to be S=( 0, s){\displaystyle\mathbf{S}=(0,\mathbf{s})} where s is the spin pseudovector.
The four-entropy vector is defined by:s= s S+ Q T{\displaystyle\mathbf{s}=s\mathbf{S}+{\frac{\mathbf{Q}}{T}}} where s is the entropy per baryon, and T the absolute temperature, in the local rest frame of the fluid.
The two values of t{\displaystyle t} found by solving this equation are the two ones such that s+ t d{\displaystyle\mathbf{s}+t\mathbf{d}} are the points where the ray intersects the sphere.
Where∇ with the dot denotes divergence, and B is the magnetic flux density, the first integral is over a surface S{\displaystyle\scriptstyle S}with oriented surface element d S{\displaystyle\scriptstyle d\mathbf{S}}.
The divergence of the magnetization,∇⋅ M,{\displaystyle\scriptstyle\nabla\cdot\mathbf,} has a role analogous to the electric charge in electrostatics[4] and is often referred to as an effective charge density ρ M{\displaystyle\rho_}.
A common technique is to solve a series of magnetostatic problems at incremental time steps and then use these solutions to approximate the term∂ B/∂ t{\displaystyle\scriptstyle\partial\mathbf{B}/\partial t}.
In such materials the magnetization must be explicitly included using the relation B= μ 0( M+ H).{\displaystyle\mathbf{B}=\mu_{0}(\mathbf{M}+\mathbf{ H}).} Except in metals, electric currents can be ignored.
Where∇ with the cross denotes curl, J is the current density and H is the magnetic field intensity, the second integral is a line integral around a closed loop C{\displaystyle\scriptstyle C}with line element l{\displaystyle\scriptstyle\mathbf{l}}.
Every quaternion can be decomposed into a scalar and a vector.q= S( q)+ V( q){\displaystyle q=\mathbf{S}(q)+\mathbf{V}(q)} These two operations S and V are called"take the Scalar of" and"take the vector of" a quaternion.
The eccentricity of an orbit can be calculated from the orbital state vectors as the magnitude of the eccentricity vector: e=|e|{\displaystyle e=\left|\mathbf{e}\right|} where: e is the eccentricity vector.
Applying the Minkowski tensor to a four-vector A with itself we get:A⋅ A= A μ η μ ν A ν{\displaystyle\mathbf{A\cdot A}=A^{\mu}\eta_{\mu\nu}A^{\nu}} which, depending on the case, may be considered the square, or its negative, of the length of the vector.
M is the mass of the attracting object,r^{\displaystyle\scriptstyle\mathbf{\hat{r}}} is the unit vector from center-of-mass of the attracting object to the center-of-mass of the object being accelerated, r is the distance between the two objects, and G is the gravitational constant.
This provides a useful relation between the differentials in coordinate time and proper time: d t= γ( u)d τ.{\displaystyle dt=\gamma(\mathbf{u}) d\ tau\,.} This relation can also be found from the time transformation in the Lorentz transformations.