Interval finite element

Interval finite element methods (IFEM) are a numerical approach used to solve partial differential equations with the ability to handle uncertainty in the numerical solution. These methods are particularly useful in situations where input parameters or boundary conditions are not precisely known and can vary within specified intervals. ### Key Features of Interval Finite Element Methods: 1. **Interval Arithmetic**: IFEM uses interval arithmetic to represent uncertain parameters. Instead of using a single value (e.g.