A terminological note on cyclotomic polynomials and Blaschke matrices

Sven Offick and Hans-Werner Wohltmann

No 2012-13, Economics Working Papers from Christian-Albrechts-University of Kiel, Department of Economics

Abstract: In a recent paper, Mertens and Ravn (2010) study the effects of anticipated fiscal policy shocks in a structural vector autoregressive model. The authors maintain that (i) the lag polynomial associated with news shocks is a cyclotomic polynomial and (ii) the matrix B(L) which transforms a nonfundamental MA representation into a fundamental one is a Blaschke matrix. Though the results in Mertens and Ravn (2010) are correct, we find that the terms 'cyclotomic' and 'Blaschke matrix' are misused.

Keywords: Nonfundamentalness; Cyclotomic polynomial; Blaschke matrix (search for similar items in EconPapers)
JEL-codes: C32 E32 (search for similar items in EconPapers)
Date: 2012
New Economics Papers: this item is included in nep-ets
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