On Two-Player Scalar Discrete-Time Linear Quadratic Games
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866910054559514624 |
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| author | Cavalagli, Chiara Bemporad, Alberto Zanon, Mario |
| author_facet | Cavalagli, Chiara Bemporad, Alberto Zanon, Mario |
| contents | For the characterization of Feedback Nash Equilibria (FNE) in linear quadratic games, this paper provides a detailed analysis of the discrete-time discounted coupled best-response equations for the scalar two-player setting, together with a set of analytical tools for the classification of local saddle property for the iterative best-response method. Through analytical and numerical results we show the importance of classification, revealing an anti-coordination scheme in the case of multiple solutions. Particular attention is given to the symmetric case, where identical cost function parameters allow closed-form expressions and explicit necessary and sufficient conditions for the existence and multiplicity of FNE. We also present numerical results that illustrate the theoretical findings and offer foundational insights for the design and validation of iterative NE-seeking methods. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2603_13122 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | On Two-Player Scalar Discrete-Time Linear Quadratic Games Cavalagli, Chiara Bemporad, Alberto Zanon, Mario Optimization and Control For the characterization of Feedback Nash Equilibria (FNE) in linear quadratic games, this paper provides a detailed analysis of the discrete-time discounted coupled best-response equations for the scalar two-player setting, together with a set of analytical tools for the classification of local saddle property for the iterative best-response method. Through analytical and numerical results we show the importance of classification, revealing an anti-coordination scheme in the case of multiple solutions. Particular attention is given to the symmetric case, where identical cost function parameters allow closed-form expressions and explicit necessary and sufficient conditions for the existence and multiplicity of FNE. We also present numerical results that illustrate the theoretical findings and offer foundational insights for the design and validation of iterative NE-seeking methods. |
| title | On Two-Player Scalar Discrete-Time Linear Quadratic Games |
| topic | Optimization and Control |
| url | https://arxiv.org/abs/2603.13122 |