"equation" - key terms from Wikipedia

algebraic equation
arrhenius equation
boltzmann equation
characteristic equation
chemical equation
continuity equation
difference equation
differential equation
diffusion equation
diode equation
dirac equation
drake equation
eigenvalue equation
electromagnetic wave equation
equation
equation	editor
equation	of interest
equation	of motion
equation	of state
equation	of time
equation	represents
field equation
first equation
following equation
functional equation
geodesic equation
goldman equation
groundwater flow equation
heat equation
helmholtz equation
human equation
lamm equation
linear diophantine equation
linear equation
motion equation
nernst equation
ordinary differential equation
partial differential equation
polynomial equation
quadratic equation
rate equation
rendering equation
rocket equation
s equation
second equation
side of the equation
structural equation	modeling
van der waals equation
vorticity equation
wave equation