Jianhong Xu

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SUMMARY Let M T be the mean ÿrst passage matrix for an n-state ergodic Markov chain with a transition matrix T. We partition T as a 2 × 2 block matrix and show how to reconstruct M T eeciently by using the blocks of T and the mean ÿrst passage matrices associated with the non-overlapping Perron complements of T. We present a schematic diagram showing how(More)
A 60 years old chinese male scheduled for a removal of an intracardiac mass occupying majority of right ventricular space, right ventricular outflow tract and pulmonary artery. The giant cardiac mass was later diagnosed pathologically as metastatic liposarcoma. The patient had a history of surgical removal of myxoid liposarcoma from his left thigh many(More)