This physical theory uses analogues of rotation matrices containing hyperbolic trig functions. A common derivation in this theory that uses the Pythagorean theorem considers light bouncing (10[1])between two mirrors. (10[1])In this theory, (10[1]-5[1])the integral (10[1])of gamma dt over c equals the proper time. Lorentz transformations convert four-vectors between inertial reference frames in this (10[1])theory, (-5[1])which holds that simultaneity depends on your reference frame. This theory predicts that moving (10[1])objects experience time dilation and length (-5[1])contraction, (10[1])and it was developed in one of the “annus mirabilis” papers. For 10 points, name this theory of Albert Einstein that he (10[1])expanded into a “general” form. ■END■ (10[1])