Abstract
Toeplitz Hermitian Positive Definite (THPD) matrices play an important role in signal processing and
computer graphics and circular models, related to angular / periodic data, have vide applications in
various walks of life. Visualizing a circular model through THPD matrix the required computations on
THPD matrices using single bordering and double bordering are discussed. It can be seen that every
tridiagonal THPD leads to Cardioid model.
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