Dear Editor, Although various underlying conditions such as increased intracranial pressure, inflammation, ischemia, or compression can induce optic disc edema (ODE), all forms of disc swelling ultimately result from blockage of axo-plasmic transport [1]. In contrast to these types of ODE, which can generally be managed by systemic treatment of the underlying etiology, we describe a case of ODE...

Sometimes an ordinary differential equation (ODE) solver gives the results it should, even if they are unexpected or undesirable. To obtain correct, expected numerical results, both relative and absolute error control tolerances must be chosen judiciously. Here we attempt to clear up some possible misunderstandings regarding the performance of a popular ODE solver and error control.

In order to integrate numerically a well-posed multiscale evolutionary problem such as a Cauchy problem for an ODE system or a PDE system, using time-subcycling techniques consists in splitting the vector field in a fast part and a slow part and taking advantage of this decomposition, for example by integrating the fast equation on a much smaller time step than the slow equation (instead of hav...

This paper describes mathematical and software developments for a suite of programs for solving ordinary differential equations in Matlab.