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For numeric solving, perhaps. This book is focused on symbolic computation.
by pavpanchekha 11y ago
For numeric solving, perhaps. This book is focused on symbolic computation.
- santaclaus 11y agoDiscrete Lagrangians are actually a really fun way to derive various structure preserving integrators. Define your Lagrangian at discrete time steps, then just take some derivatives (no need for calculus of variations due to the discretization in time) and watch time integration methods fall into your lap. This is a nice approach as it makes it really obvious what discrete equivalents of your continuous system are conserved.