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Compact Toeplitz operators via the Berezin transform on bounded symmetric domains
Authors:Miroslav Engliš
Institution:(1) Mathematical Institute, Academy of Sciences, Zitná 25, 11567 Prague 1, Czech Republic
Abstract:Let OHgr be an irreducible bounded symmetric domain of genusp, h(x, y) its Jordan triple determinant, andA ngr 2 (OHgr) the standard weighted Bergman space of holomorphic functions on OHgr square-integrable with respect to the measureh(z, z) ngr–p dz. Extending the recent result of Axler and Zheng for OHgr=D, ngr=p=2 (the unweighted Bergman space on the unit disc), we show that ifS is a finite sum of finite products of Toeplitz operators onA ngr 2 (OHgr) and ngr is sufficiently large, thenS is compact if and only if the Berezin transform 
$$\bar S$$
ofS tends to zero asz approaches partOHgr. An analogous assertion for the Fock space is also obtained.The author's research was supported by GA AV CcaronR grant A1019701 and GA CcaronR grant 201/96/0411.
Keywords:47B35  32M15
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