Noetherian Equations. Index
Equation (A) is called Noetherian if it is both n-normal and d-normal; the corresponding operator A is called a Boetherian operator or a Φ-operator. [In the literature, these operators are sometimes called Fredholm operators. The operators A appearing in n-normal or d-normal equations (A) are called semi-Fredholm.]
KeywordsBanach Space Homogeneous Equation Linear Extension Remarkable Property Adjoint Equation
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© Birkhäuser Boston, Inc. 1982