Research output: Contribution to journal › Article › peer-review
ALEXANDER r-TUPLES AND BIER COMPLEXES. / Jojic, Dusko; Некрасов, Илья Игоревич; Панина, Гаянэ Юрьевна; Zivaljevic, Rade.
In: Publications de l'Institut Mathematique, Vol. 104, No. 118, 2018, p. 1-22.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - ALEXANDER r-TUPLES AND BIER COMPLEXES
AU - Jojic, Dusko
AU - Некрасов, Илья Игоревич
AU - Панина, Гаянэ Юрьевна
AU - Zivaljevic, Rade
PY - 2018
Y1 - 2018
N2 - We introduce and study Alexander r-tuples K = <K-i >(r)(i=1) of simplicial complexes, as a common generalization of pairs of Alexander dual complexes (Alexander 2-tuples) and r-unavoidable complexes of [3] and [11]. In the same vein, the Bier complexes, defined as the deleted joins K-Delta*of Alexander r-tuples, include both standard Bier spheres and optimal multiple chessboard complexes (Section 2.2) as interesting, special cases.Our main results are Theorem 4.1 saying that (1) the r-fold deleted join of Alexander r-tuple is a pure complex homotopy equivalent to a wedge of spheres, and (2) the r-fold deleted join of a collective unavoidable r-tuple is (n - r - 1)-connected, and a classification theorem (Theorem 5.1 and Corollary 5.1) for Alexander r-tuples and Bier complexes.
AB - We introduce and study Alexander r-tuples K = <K-i >(r)(i=1) of simplicial complexes, as a common generalization of pairs of Alexander dual complexes (Alexander 2-tuples) and r-unavoidable complexes of [3] and [11]. In the same vein, the Bier complexes, defined as the deleted joins K-Delta*of Alexander r-tuples, include both standard Bier spheres and optimal multiple chessboard complexes (Section 2.2) as interesting, special cases.Our main results are Theorem 4.1 saying that (1) the r-fold deleted join of Alexander r-tuple is a pure complex homotopy equivalent to a wedge of spheres, and (2) the r-fold deleted join of a collective unavoidable r-tuple is (n - r - 1)-connected, and a classification theorem (Theorem 5.1 and Corollary 5.1) for Alexander r-tuples and Bier complexes.
KW - Двойственность Александера, дискретная теория Морса, Бировы сферы
KW - Bier spheres
KW - Alexander duality
KW - chessboard complexes
KW - unavoidable complexes
KW - discrete Morse theory
KW - SPHERES
U2 - 10.2298/PIM1818001J
DO - 10.2298/PIM1818001J
M3 - Article
VL - 104
SP - 1
EP - 22
JO - Publications de l'Institut Mathematique
JF - Publications de l'Institut Mathematique
SN - 0350-1302
IS - 118
ER -
ID: 34839118