Integral equations and operator theory. 2005;51(1):121-140. doi: 10.1007/s00020-003-1248-6 Q20.92025
On the Existence of Solutions to the Operator Riccati Equation and the tan Θ Theorem
DOI: 10.1007/s00020-003-1248-6
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Integral equations and operator theory. 2005;51(1):121-140. doi: 10.1007/s00020-003-1248-6 Q20.92025
DOI: 10.1007/s00020-003-1248-6
摘要 查看摘要