Homological dimensions of the extension algebras of monomial algebras

Verfasser / Beitragende:
[Hong Shi]
Ort, Verlag, Jahr:
2015
Enthalten in:
Acta Mathematica Sinica, English Series, 31/4(2015-04-01), 675-694
Format:
Artikel (online)
ID: 605461775
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024 7 0 |a 10.1007/s10114-015-3623-z  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10114-015-3623-z 
100 1 |a Shi  |D Hong  |u Department of Mathematics, Nanjing University of Finance and Economics, 210046, Nanjing, P. R. China  |4 aut 
245 1 0 |a Homological dimensions of the extension algebras of monomial algebras  |h [Elektronische Daten]  |c [Hong Shi] 
520 3 |a The main objective of this paper is to study the dimension trees and further the homological dimensions of the extension algebras — dual and trivially twisted extensions — with a unified combinatorial approach using the two combinatorial algorithms — Topdown and Bottomup. We first present a more complete and clearer picture of a dimension tree, with which we are then able, on the one hand, to sharpen some results obtained before and furthermore reveal a few more hidden subtle homological phenomenons of or connections between the involved algebras; on the other hand, to provide two more efficient combinatorial algorithms for computing dimension trees, and consequently the homological dimensions as an application. We believe that the more refined complete structural information on dimension trees will be useful to study other homological properties of this class of extension algebras. 
540 |a Institute of Mathematics, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Chinese Mathematical Society and Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Topdown  |2 nationallicence 
690 7 |a bottomup  |2 nationallicence 
690 7 |a dimension tree  |2 nationallicence 
690 7 |a syzygy  |2 nationallicence 
690 7 |a finitistic dimensions  |2 nationallicence 
773 0 |t Acta Mathematica Sinica, English Series  |d Institute of Mathematics, Chinese Academy of Sciences and Chinese Mathematical Society  |g 31/4(2015-04-01), 675-694  |x 1439-8516  |q 31:4<675  |1 2015  |2 31  |o 10114 
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950 |B NATIONALLICENCE  |P 100  |E 1-  |a Shi  |D Hong  |u Department of Mathematics, Nanjing University of Finance and Economics, 210046, Nanjing, P. R. China  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Acta Mathematica Sinica, English Series  |d Institute of Mathematics, Chinese Academy of Sciences and Chinese Mathematical Society  |g 31/4(2015-04-01), 675-694  |x 1439-8516  |q 31:4<675  |1 2015  |2 31  |o 10114