机译:Positive-instantaneous frequency and approximation
Macao Univ Sci & Technol, Macao Ctr Math Sci, Macau, Peoples R China;
Mobius transform; blaschke product; mono-component; hilbert transform; hardy space; inner and outer functions; adaptive fourier decomposition; rational orthogonal system; nevanlinna factorization; beurling-lax theorem; reproducing kernel hilbert space; several complex variables; clifford algebra; pre-orthogonal AFD;