Details:
Title  Two way subtable sum problems and quadratic Gr\"obner bases.  Author(s)  Takayuki Hibi, Hidefumi Ohsugi  Type  Article in Journal  Abstract  Hara, Takemura and Yoshida discussed toric ideals arising from two way subtable sum problems and showed that these toric ideals are generated by quadratic binomials if and only if the subtables are either diagonal or triangular. In the present paper, we show that if the subtables are either diagonal or triangular, then their toric ideals possess quadratic Gröbner bases.  ISSN  00029939; 10886826/e 
URL 
http://www.ams.org/journals/proc/200913705/S0002993908096755/home.html 
Language  English  Journal  Proc. Am. Math. Soc.  Volume  137  Number  5  Pages  15391542  Publisher  American Mathematical Society (AMS), Providence, RI  Year  2009  Edition  0  Translation 
No  Refereed 
No 
