## Contents

- updateTrustRegion
- Syntax
- Description
- Input Arguments
- Output Arguments
- See Also
- References

## updateTrustRegion

updates the trust region according to the strategy

    %described in [1, Appendix II].%

## Syntax

[obj,tr_action] = updateTrustRegion(obj,auxData_iter,absErr_true)

## Description

This function updates the trust region according to the strategy described in [1, Appendix II].

## Input Arguments

obj | updated instance of class computeTermRegNonlinSysOptApproach
auxData_iter | instance of class termRegNonlinSysSolutionAuxData
absErr_true | set of abstraction errors for the optimal solution (class: interval)

## Output Arguments

obj | updated instance of class computeTermRegNonlinSysOptApproach
tr_action | string describing the modification of the trust region (`'enlarge'` / `'no action'` / `'shrink'`)

## See Also

-

## References

[1] L. Schäfer et al. "Scalable Computation of Robust Control Invariant Sets of Nonlinear Systems", in IEEE Transactions on Automatic Control, vol. 69, no. 2, pp. 755-770, 2024

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