... one of arcs [1, 2], [2, 4] , and [3, 1]. The fourth component is value stable and comprises vertices 16, 17, and 18 in 2 two-arc negative-feedback loops. 4. 4 DISCUSSION 4. 4.1 Co n s t r u C t ... two-arc feed-back loops involving vertices 10 and 11 in one (negative) and 14 and 19 in the other (positive). The largest strong component, comprising vertices 3, 4, 5, 6, and 9 in 2 two-arc ... Jeffries (19 74) , Roberts and Brown (1975), Roberts (1976a, 1976b), Perry (1983), Puccia and Levins (1985), Klee (1989), Ridgley and Lumpkin (2000), and Bang-Jensen and Gutin (2001). 4. 2.1 pA r...