NeumannBC

class pinnx.icbc.NeumannBC(func, on_boundary=<function NeumannBC.<lambda>>)

Neumann boundary conditions: dy/dn(x) = func(x).

Parameters:

• func (Union[Callable[[Dict[str, Union[Array, ndarray, bool, number, bool, int, float, complex, Quantity]], ...], Dict[str, Union[Array, ndarray, bool, number, bool, int, float, complex, Quantity]]], Callable[[Dict[str, Union[Array, ndarray, bool, number, bool, int, float, complex, Quantity]]], Dict[str, Union[Array, ndarray, bool, number, bool, int, float, complex, Quantity]]]]) – A function that takes an array of points and returns an array of values.

• on_boundary (Callable[[Dict[str, Union[Array, ndarray, bool, number, bool, int, float, complex, Quantity]], array], array]) – (x, Geometry.on_boundary(x)) -> True/False.

error(bc_inputs, bc_outputs, **kwargs)

Returns the loss for each component at the initial or boundary conditions.