THE BETTI NUMBERS OF FORESTS
THE BETTI NUMBERS OF FORESTS
复制标题
DOI:
--
复制
发表时间:
2005-01
期刊:
影响因子:
--
通讯作者:
Sean Jacques;Mordechai Katzman
中科院分区:
文献类型:
--
作者:
Sean Jacques;Mordechai Katzman
This paper produces a recursive formula of the Betti numbers of certain Stanley- Reisner ideals (graph ideals associated to forests). This gives a purely combinatorial definition of the projective dimension of these ideals, which turns out to be a new numerical invariant of forests. Finally, we propose a possible extension of this invariant to general graphs.