A note on the parallel sum (Q2069861)
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scientific article; zbMATH DE number 7461258
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A note on the parallel sum |
scientific article; zbMATH DE number 7461258 |
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A note on the parallel sum (English)
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21 January 2022
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This paper contained three main theorems that are interesting and new. A necessary and sufficient condition for an operator to majorise the parallel sum of two positive definite operators is given. Also, some new inequalities involving parallel sum of two operators and harmonic means are presented. Moreover, a conjecture is left for further research. The proofs are clear and explicit. So, the article is recommended for publication in the journal.
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parallel sum
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operator inequality
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0.8987584
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