Existence theory for elliptic equations of general exponential nonlinearity on finite graphs
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866910958833631232 |
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| author | Hua, Bobo Sun, Linlin Wang, Jiaxuan |
| author_facet | Hua, Bobo Sun, Linlin Wang, Jiaxuan |
| contents | We study semilinear elliptic equations on finite graphs with fully general exponential nonlinearities, thereby extending classical equations such as the Kazdan-Warner and Chern-Simons equations. A key contribution of this work is the development of new techniques for deriving a priori estimates in this generalized setting, which reduce the original finite graph to a graph with only two vertices. This reduction enables us to explicitly compute the Brouwer degree and to establish the existence of solutions when the degree is nonzero. Furthermore, using the method of sub- and supersolutions, we also prove the existence of solutions in cases where the Brouwer degree vanishes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14799 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Existence theory for elliptic equations of general exponential nonlinearity on finite graphs Hua, Bobo Sun, Linlin Wang, Jiaxuan Analysis of PDEs We study semilinear elliptic equations on finite graphs with fully general exponential nonlinearities, thereby extending classical equations such as the Kazdan-Warner and Chern-Simons equations. A key contribution of this work is the development of new techniques for deriving a priori estimates in this generalized setting, which reduce the original finite graph to a graph with only two vertices. This reduction enables us to explicitly compute the Brouwer degree and to establish the existence of solutions when the degree is nonzero. Furthermore, using the method of sub- and supersolutions, we also prove the existence of solutions in cases where the Brouwer degree vanishes. |
| title | Existence theory for elliptic equations of general exponential nonlinearity on finite graphs |
| topic | Analysis of PDEs |
| url | https://arxiv.org/abs/2505.14799 |