Figure 5 Comparison between two inertial systems in ⑶. For example, the inertial system K’ has an infinitely great velocity, and inertial system K has a velocity of 0 (i.e., a stationary state). Their space-time properties are determined by two points (a and b). Observed from K’, the time in K is lengthened (∞) and space is shortened (dl), When observed from K, the time in K’ is shortened (dl) and space is elongated (∞).
Feature (4) can now be considered. The single-dimensional nature means that its space-time nature is determined by one point, not two (a and b). Therefore, instead of two dimensions being determined by the ratio, the size of a single dimension is determined by a one-dimensional unit value (which varies by unit number). Therefore, it is meaningless to lengthen or shorten the space-time of two inertial systems in a two-dimensional state.
How the extension of velocity representing two dimensions differs from the extension of space or time representing one dimension can now be discussed. It is suggested by Axiom 2 that the space-time extension of a velocity can reach infinite distance and that the ratio of the velocity is arbitrary and either finite or infinite. As shown in Figure 6, in a comparison of two Cartesian inertial systems moving at different velocities, their space-time extension can also reach infinite distance. In Axiom 1, quantitative values extend in units of 0 (i.e., 1 0, 2 0, 3 0, and so on). The extension of two different values (i.e., two inertial frames) is carried out using an arbitrary integer () 1 that is a multiple of 0 and is carried out in units. The minimum magnitude is one 0. Unlike ⑶, where there is an inertial system with an infinite approach velocity of 0 (dl/∞), the nearest 0 inertial system in Axiom 1 is two 0 inertial systems. In Axiom 1, the uniqueness of infinity determines that the formula 1/0=∞/1=∞ is not true and that only the formula that ∞/0=∞ is true, meaning the formula 300,000 km /0=∞/ 300,000 km =∞ is not true. For each finite length (for example, 1 meter) there is a finity, not an infinity, so 300,000 kilometers is not sufficient to carry an infinite amount of burden. The existence of Axiom 1 means that there is only a finite number of quantities to choose from between 0 and 1 second or between 0 and 300,000 kilometers, and there must be an infinite number of quantities to choose from between 0 and ∞ (units of seconds or kilometers). Therefore, the velocity of light is not an ultimate velocity, and putting the velocity of light into a special superior position lacks any profound basis in physics.