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LaTeX Math Block | ||||
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\beta \cdot \frac{\partial {\rm w}}{\partial t} = \nabla \left( \alpha \nabla {\rm w} \right) + f({\bf r}) |
where
| space-time field variable |
| mobility kinetic coefficient | ||||||||
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| time |
| capacitance kinetic coefficient | ||||||||
| Position vector |
| density of external forces |
In the absence of external forces and constant kinetic coefficients the diffusion equation takes form:
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