RT Journal T1 GLOBAL OPTIMIZATION OF THE DIFFERENCE OF TWO INCREASING PLUS-CONVEX-ALONG-RAYS FUNCTIONS A1 H. SHAHRIARIPOUR, H. MOHEBI PB Acta mathematica scientia,Series B FD 2020-12-25 YR 2020 JF Acta mathematica scientia, Series B JO Acta mathematica scientia,Series B VO 40 IS 6 SP 1849 DO 10.1007/s10473-020-0615-6 K1 increasing plus-convex-along-rays function;support set;maximal element;global minimum;DC-function LK {http://121.43.60.238/sxwlxbB/EN/article/article_16291.shtml}