This post relates to the previous one here.
Speed is the time rate of distance traversed. Pace is the space rate of elapsed time.
The (time) speed of a body is the distance traversed per unit of independent time without regard to direction, Δx/t. The instantaneous speed is the speed at a point in space and time: dx(t)/dt. It is the reciprocal of the instantaneous pace, 1/(dt/dx(t)).
The inverse speed (time pace) of a body is reciprocal of the speed, 1/(Δx/t) ≈ Δt/Δx. The instantaneous pace is the pace at a point in space and time: 1/(dx(t)/dt) ≈ dt/dx(t). It is the reciprocal of the puncstanceous speed dx(t)/dt.
The (space) pace of a body is the traversal time per unit of independent distance without regard to direction, Δt(x)/x. The puncstanceous pace is the pace at a point in time and space: dt(x)/dx.
The inverse pace (space speed) of a body is the reciprocal of the pace, 1/(Δt(x)/x) ≈ Δx/Δt(x). The puncstanceous speed is the inverse pace at a point in time and space: 1/(dt/dx) ≈ dx/dt(x).
The (time) velocity of a body is the displacement traversed per unit of independent time, Δx/t. The instantaneous velocity is the time velocity at a point in space and time: dx(t)/dt. It is the reciprocal of the puncstanceous lenticity: 1/(dt/dx(t)).
The inverse velocity (time lenticity) of a body is the reciprocal of the velocity, 1/(Δx/t) ≈ Δt/Δx. The instantaneous lenticity is the lenticity at a point in space and time: 1/(dx(t)/dt) ≈ dt/dx(t). It is the reciprocal of the instantaneous velocity: dx(t)/dt.
The (space) lenticity of a body is the dischronment per unit of independent length, Δt(x)/x. The puncstanceous lenticity is the time lenticity at a point in time and space: dt(x)/dx.
The inverse lenticity (space velocity) of a body is the reciprocal of the lenticity, 1/(Δt(x)/x̂) ≈ Δx/Δt(x). The puncstanceous velocity is the lenticity at a point in time and space: dx/dt(x).
Addition of speeds or velocities is with arithmetic addition (+) since the time interval in the denominator is the same for all.
Addition of inverse speeds or inverse velocities is with reciprocal addition (⊞) since the space interval in the numerator is the same for all.
Addition of paces or lenticities is with arithmetic addition (+) since the space interval in the denominator is the same for all.
Addition of inverse paces or inverse lenticities is with reciprocal addition (⊞) since the time interval in the numerator is the same for all.