"spectral theory" meaning in All languages combined

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        "Those theories extending the eigenvalue and eigenvector theory of a single square matrix to a much broader theory of the structure of operators in a variety of mathematical spaces."
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          "eigenvalue",
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          "eigenvector",
          "eigenvector"
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          "square matrix",
          "square matrix"
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          "operator",
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        "(mathematics) Those theories extending the eigenvalue and eigenvector theory of a single square matrix to a much broader theory of the structure of operators in a variety of mathematical spaces."
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        "mathematics",
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  "word": "spectral theory"
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        "(mathematics) Those theories extending the eigenvalue and eigenvector theory of a single square matrix to a much broader theory of the structure of operators in a variety of mathematical spaces."
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        "mathematics",
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