Banach spaces, as complete normed vector spaces, form the backbone of modern functional analysis and provide the setting for analysing a wide range of linear operators. Generalised inverses extend the ...

This is a preview. Log in through your library . Abstract By using the Darboux frame {ξ, ζ, η} of a non-null curve lying on a timelike surface in Minkowski 3-space, where ξ is the unit tangent vector ...