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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2508.04496 |
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| _version_ | 1866908852727840768 |
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| author | Bello, Glenier Yakubovich, Dmitry |
| author_facet | Bello, Glenier Yakubovich, Dmitry |
| contents | Given a bounded open subset $Ω$ and closed subsets $A,B$ of $\mathbb{R}^k$, we discuss when an estimate $u(x)\le g(dist(x,A\cup B))$, $x\inΩ\setminus(A\cup B)$, for a function $u$ subharmonic on $Ω\setminus B$, implies that $u(x)\le h(dist(x,B))$, $x\inΩ\setminus B$, where $g,h:(0,\infty)\to (0,\infty)$ are decreasing functions and $g(0^+)=h(0^+)=\infty$. We seek for explicit expressions of $h$ in terms of $g$. We give some results of this type and show that Domar's work (On the existence of a largest subharmonic minorant of a given function, Ark. Mat., 3 (1957), pp. 429-440) permits one to deduce other results in this direction. Then we compare these two approaches. Similar results are deduced for estimates of analytic functions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_04496 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Self-improving estimates of growth of subharmonic and analytic functions Bello, Glenier Yakubovich, Dmitry Complex Variables Functional Analysis Given a bounded open subset $Ω$ and closed subsets $A,B$ of $\mathbb{R}^k$, we discuss when an estimate $u(x)\le g(dist(x,A\cup B))$, $x\inΩ\setminus(A\cup B)$, for a function $u$ subharmonic on $Ω\setminus B$, implies that $u(x)\le h(dist(x,B))$, $x\inΩ\setminus B$, where $g,h:(0,\infty)\to (0,\infty)$ are decreasing functions and $g(0^+)=h(0^+)=\infty$. We seek for explicit expressions of $h$ in terms of $g$. We give some results of this type and show that Domar's work (On the existence of a largest subharmonic minorant of a given function, Ark. Mat., 3 (1957), pp. 429-440) permits one to deduce other results in this direction. Then we compare these two approaches. Similar results are deduced for estimates of analytic functions. |
| title | Self-improving estimates of growth of subharmonic and analytic functions |
| topic | Complex Variables Functional Analysis |
| url | https://arxiv.org/abs/2508.04496 |