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| Format: | Preprint |
| Published: |
2024
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| Online Access: | https://arxiv.org/abs/2401.04466 |
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| _version_ | 1866916085585936384 |
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| author | Pasteczka, Paweł |
| author_facet | Pasteczka, Paweł |
| contents | We prove that whenever $M_1,\dots,M_n\colon I^k \to I$, ($n,k \in \mathbb{N}$) are symmetric, continuous means on the interval $I$ and $S_1,\dots,S_m\colon I^k \to I$ ($m <n$) satisfies a sort of embeddability assumptions then for every continuous function $μ\colon I^n \to \mathbb{R}$ which is strictly monotone in each coordinate, the functional equation $$ μ(S_1(v),\dots,S_m(v),\underbrace{F(v),\dots,F(v)}_{(n-m)\text{ times}})=μ(M_1(v),\dots,M_n(v)) $$ has the unique solution $F=F_μ\colon I^k \to I$ which is a mean. We deliver some sufficient conditions so that $F_μ$ is well-defined (in particular uniquely determined) and study its properties.
The background of this research is to provide a broad overview of the family of Beta-type means introduced in (Himmel and Matkowski, 2018). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_04466 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Pexider invariance equation for embeddable mean-type mappings Pasteczka, Paweł Classical Analysis and ODEs We prove that whenever $M_1,\dots,M_n\colon I^k \to I$, ($n,k \in \mathbb{N}$) are symmetric, continuous means on the interval $I$ and $S_1,\dots,S_m\colon I^k \to I$ ($m <n$) satisfies a sort of embeddability assumptions then for every continuous function $μ\colon I^n \to \mathbb{R}$ which is strictly monotone in each coordinate, the functional equation $$ μ(S_1(v),\dots,S_m(v),\underbrace{F(v),\dots,F(v)}_{(n-m)\text{ times}})=μ(M_1(v),\dots,M_n(v)) $$ has the unique solution $F=F_μ\colon I^k \to I$ which is a mean. We deliver some sufficient conditions so that $F_μ$ is well-defined (in particular uniquely determined) and study its properties. The background of this research is to provide a broad overview of the family of Beta-type means introduced in (Himmel and Matkowski, 2018). |
| title | Pexider invariance equation for embeddable mean-type mappings |
| topic | Classical Analysis and ODEs |
| url | https://arxiv.org/abs/2401.04466 |