Calculus allows us to model change (rates of reaction, motion). Linear Algebra allows us to handle multidimensional data. If you want to do "complete" science, you need at least a working knowledge of these.
[ \hat{H} \Psi[g_{\mu\nu}] = 0 ]
This is the . It says that the wavefunction of the universe ( \Psi ) depends only on the spatial geometry (the metric ( g_{\mu\nu} )) and contains no time variable at all. In this equation, the universe does not evolve in time; time is absent. Leading interpretations propose that time is an emergent phenomenon —a macroscopic approximation arising from the entanglement of subsystems within a timeless quantum universe. Proposals like the Page-Wootters mechanism (1983) show how time can appear when one part of a quantum system (a "clock") becomes entangled with another part, producing relational evolution without a global time parameter. completetly science
Here is a deep guide on mastering the domain of science. Calculus allows us to model change (rates of