mechanics of a constrained particle on the quantum group SU q (1, 1). We construct its left-
and right-regular representations, and show that the representation matrices reproduce two-
sided wavefunctions and correlation functions of DSSYK. We then construct a dynamical
action and path integral for a particle on SU q (1, 1), whose quantization reproduces the
aforementioned representation theory. By imposing boundary conditions or constraining the …