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The Kazdan-Warner problem on compact K\"ahler surfaces

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arxiv 2403.07698 v3 pith:PLLUUUMU submitted 2024-03-12 math.DG

classification math.DG
keywords ahlercompactsurfacescurvatureskazdan-warnerprescribingproblemsign-changing
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In this paper, we investigate a Kazdan-Warner problem on compact K\"ahler surfaces, which corresponds to prescribing sign-changing Chern scalar curvatures, and establish a Chen-Li type existence theorem on compact K\"ahler surfaces when the candidate curvature function is of negative average. Moreover, we give an alternative proof of Ding-Liu's theorem [Trans. Amer. Math. Soc. 347(1995) 1059-1066] on prescribing sign-changing Gaussian curvatures.

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