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arXiv 1909.04007math.RA
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一类几乎可逆无限矩阵

A Family of Almost Invertible Infinite Matrices

Daniel P. Bossaller

摘要:

对行列有限矩阵族引入了弗雷德霍姆算子族的一个代数模拟,称为“弗雷德霍姆矩阵”。“此外,还引入了一个测度,它表示Fredholm矩阵离可逆矩阵有多远.它进一步表明,这一措施尊重乘法,是不变的扰动下由一个矩阵从$M_\infty(K)$,是不变的共轭下由一个可逆的行和列有限矩阵。

英文摘要:

An algebraic analogue of the family of Fredholm operators is introduced for the family of row and column finite matrices, dubbed "Fredholm matrices." In addition, a measure is introduced which indicates how far a Fredholm matrix is from an invertible matrix. It is further shown that this measure respects multiplication, is invariant under perturbation by a matrix from $M_\infty(K)$, and is invariant under conjugation by an invertible row and column finite matrix.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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