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Computation of nielsen and reidemeister coincidence numbers for multiple maps
(2020-01-01)
Let f1, …, fk: M → N be maps between closed manifolds, N(f1, …, fk ) and R(f1, …, fk ) be the Nielsen and the Reideimeister coincidence numbers, respectively. In this note, we relate R(f1, …, fk ) with R(f1, f2 ), …, R(f1, ...
The missing link: using the NBER recession indicator to construct coincident and leading indices of economic activity
(Elsevier Science Sa, 2006-05)
We use the information content in the decisions of the NBER Business Cycle Dating Committee to construct coincident and leading indices of economic activity for the United States. We identify the coincident index by assuming ...
Obstruction theory for coincidences of multiple maps
(2017-09-15)
Let f1,…,fk:X→N be maps from a complex X to a compact manifold N, k≥2. In previous works [1,12], a Lefschetz type theorem was established so that the non-vanishing of a Lefschetz type coincidence class L(f1,…,fk) implies ...
Axioms for the coincidence index of maps between manifolds of the same dimension
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
We study the coincidence theory of maps between two manifolds of the same dimension from an axiomatic viewpoint. First we look at coincidences of maps between manifolds where one of the maps is orientation true, and give ...
Coincidence properties for maps from the torus to the Klein bottle
(SHANGHAI SCIENTIFIC TECHNOLOGY LITERATURE PUBLISHING HOUSE, 2008)
The authors study the coincidence theory for pairs of maps from the Torus to the Klein bottle. Reidemeister classes and the Nielsen number are computed, and it is shown that any given pair of maps satisfies the Wecken ...
Constructing coincident and leading indices of economic activity for the brazilian economy
(Fundação Getulio Vargas. Escola de Pós-graduação em Economia, 2011-03-30)
This paper has three original contributions. The first is the reconstruction effort of the series of employment and income to allow the creation of a new coincident index for the Brazilian economic activity. The second is ...
Coincidence Wecken homotopies versus Wecken homotopies relative to a fixed homotopy in one of the maps
(ELSEVIER SCIENCE BV, 2010)
We study the 1-parameter Wecken problem versus the restricted Wecken problem, for coincidence free pairs of maps between surfaces. For this we use properties of the function space between two surfaces and of the pure braid ...
The missing link: using the NBER recession indicator to construct coincident and leading indices economic activity
(Fundação Getulio Vargas. Escola de Pós-graduação em Economia, 2002-06-01)
We use the information content in the decisions of the NBER Business Cycle Dating Committee to construct coincident and leading indices of economic activity for the United States. We identify the coincident index by assuming ...
The missing link: using the NBER recession indicator to construct coincident and leading indices economic activity
(Escola de Pós-Graduação em Economia da FGV, 2003-08-01)
We use the information content in the decisions of the NBER Business Cycle Dating Committee to construct coincident and leading indices of economic activity for the United States. We identify the coincident index by assuming ...