<p>The paper initiates the concept of negative definite consistent in Fredholm. The entanglement stability and the weakly entanglement stability of negative definite consistent in Fredholm for the system of <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="40840_2025_1908_Article_IEq1.gif" Format="GIF" Height="14" Rendition="HTML" Resolution="72" Type="Linedraw" Width="39" /> </InlineMediaObject> <EquationSource Format="TEX">\(2\times 2\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>2</mn> <mo>×</mo> <mn>2</mn> </mrow> </math></EquationSource> </InlineEquation> upper triangular operator matrices are characterized with the help of the negative definite consistent in Fredholm spectrum.</p>

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Negative Definite Consistency in Fredholm and Entanglement Stability for System of Operator Matrices

  • Sinan Qiu,
  • Lining Jiang

摘要

The paper initiates the concept of negative definite consistent in Fredholm. The entanglement stability and the weakly entanglement stability of negative definite consistent in Fredholm for the system of \(2\times 2\) 2 × 2 upper triangular operator matrices are characterized with the help of the negative definite consistent in Fredholm spectrum.