Inversion problem
=================

SimPEG’s new inversion framework is targeted to solve **deterministic inversion problems** particularly in the field of geophysics.
These are generally defined as an optimization problem in which we want to minimize a given objective function :math:`\phi(\mathbf{m})` that depends on a *model* vector :math:`\mathbf{m}` given certain conditions.
Mathematically this can be expressed as:

.. math::

   \mathbf{m}^* = \min\limits_{\mathbf{m}} \phi(\mathbf{m})

where :math:`\mathbf{m}^*` is the model that minimizes that objective function.

In order to set up this problem we’ll need two main pieces: the :ref:`objective-function` and the :ref:`minimizer`.