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https://doi.org/10.1142/9789813235434_0004Cited by:0 (Source: Crossref)
Abstract:

The following sections are included:

  • Inner Product

  • Gram–Schmidt Theorem. Hooke’s Law. Least Square Approximation

  • Hilbert Space

  • Orthogonal Complement

  • Adjoint and Self-Adjoint Operator. Uncertainty Principle

  • Minimal Problems and Positive-Definite Matrices. Many Variable Functions

  • Unitary Operator

  • Spectrum Theorem