[1] H. Bakhtiari and H. Mohebi, Characterizing global maximizers of the difference of sub-topical functions, J. Appl. Math. Anal. Appl., 450(1) (2017), 63-76.
[2] A.R. Doagooei, Sub-topical functions and plus-co-radiant sets, Optimization, 65(1) (2016), 107-119, .
[3] S. Gaubert and J. Gunawardena, A Non-Linear Hierarchy for Discrete Event Dynamical Systems, In: Proceedings of the 4th Workshop on Discrete Event Systems Cagliari, Technical Report HPL-BRIMS-98-20, Hewlett-Packard Labs., Cambridge University Press, Cambridge, 1998.
[4] J. Gunawardena, An Introduction to Idempotency, Cambridge University Press, Cambridge, 1998.
[5] J. Gunawardena, From Max-Plus Algebra to Non-Expansive Mappings: A Non-Linear Theory for Discrete Event Systems. Theoretical Computer Science, Technical Report HPL-BRIMS-99-07, Hewlett-Packard Labs., Cambridge University Press, Cambridge, 1999.
[6] J. Gunawardena and M. Keane, On the Existence of Cycle Times for Some Nonexpansive Maps, Technical Report HPL-BRIMS-95-003, Hewlett-Packard Labs., Cambridge University Press, Cambridge, 1995.
[7] H. Mohebi, Topical functions and their properties in a class of ordered Banach spaces, Appl. Optim., 99 (2005), 343-361.
[8] H. Mohebi and M. Samet Abstract convexity of topical functions, J. Glob. Optim., 58(2) (2014), 365-375.
[9] A.M. Rubinov, Abstract Convexity and Global Optimization, Kluwer Academic Publishers, Dordrecht-Boston-London, 2000.
[10] A.M. Rubinov and I. Singer, Topical and sub-topical functions, downward sets and abstract convexity, Optimization, 50(5-6) (2001), 307-351.
[11] I. Singer, On radiant sets, downward sets, topical functions and sub-topical functions in lattice ordered groups, Optimization, 53(4) (2004), 393-428.
[12] C. Zalinescu, Convex Analysis in General Vector Spaces, World Scientific, London, 2002.
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