5M64 surface course 450 LF Beam guide rail 8

unit tangent guide rail terminal, 25~ length.

For a

unit tangent vector v [member of] UM, we denote by [[gamma].

p]M, which contains the velocity vector [gamma]'([mathematical expression not reproducible]) of the initial geodesic [gamma] at P, can be decomposed into two independent (not necessarily orthonormal) unit tangent directions [mathematical expression not reproducible].

C] = (50, 28, 3), which induces a corner (velocity discontinuity) of the composite geodesics with two unit tangents ((-0.

Since the curve [alpha](t) is also in space, there exists Frenet frame {T, N, B} at each points of the curve where T is unit tangent vector, N is principal normal vector and B is binormal vector, respectively.

Moreover, the tangent vector [alpha]'(t) is in the direction of the unit tangent T(s) of the reparametrization, so T(s(t)) = [alpha]'(t)[absolute value of [alpha]'(t)].

We denote t(v) = f'(v)and we call t(v) a unit tangent vector of f at v.

let us consider the Darboux frame fields T, g, n, where T is the unit tangent of [?

which defines a

unit tangent vector field on M and consider [e.

2m+1] is called a [phi]-section if it is spanned by X and [phi]X, where X is a

unit tangent vector orthogonal to [xi].

1] is the timelike

unit tangent vector field of (C, [xi]).

3)) holds identically for all

unit tangent vectors in [T.