Positive definiteness: from scalar to operator-valued kernels
In this paper we present a short overview of results that provide relationships among scalar, matrix-valued and certain operator-valued positive definite kernels. We refine and extend some of them in order that they may be applied for strict positive definiteness as well. This is a topic not well ex...
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| Format: | Article |
| Language: | English |
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University Constantin Brancusi of Targu-Jiu
2021-12-01
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| Series: | Surveys in Mathematics and its Applications |
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| Online Access: | https://www.utgjiu.ro/math/sma/v16/p16_19.pdf |