We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
We describe an algorithm to decompose rational functions from which we determine the poset of groups fixing these functions.
1.Alexander, D., Cummins, C. J., McKay, J. and Simons, C., ‘Completely replicable functions’, Groups, combinatorics & geometry (Durham, 1990), London Math. Soc. Lecture Note Ser. 165 (Cambridge University Press, Cambridge, 1992) 87–98.CrossRefGoogle Scholar
2
2.Conway, J. H., McKay, J. and Sebbar, A., ‘On the discrete groups of moonshine’, Proc. Amer. Math. Soc.132 (2004) 2233–2240.CrossRefGoogle Scholar
3
3.Conway, J. H. and Norton, S. P., ‘Monstrous moonshine’, Bull. London Math. Soc.11 (1979) 308–339.CrossRefGoogle Scholar
4
4.Cummins, C. J., ‘Some comments on replicable functions’, Modern trends in Lie algebra representation theory (Queen's Univ., Kingston, ON, 1994), Queen's Papers in Pure and Appl. Math. 94 (1994) 48–55.Google Scholar
5
5.Ford, D., McKay, J. and Norton, S. P., ‘More on replicable functions’, Comm. in Algebra22 (1994) 5175–5193.CrossRefGoogle Scholar
6
6.Gutierrez, J., Rubio, R. and Sevilla, D., ‘Unirational fields of transcendence degree one and functional decomposition’, Proceedings of International Symposium on Symbolic and Algebraic Computation, ISSAC 2001, 167–175.Google Scholar
7
7.McKay, J., ‘Essentials of monstrous moonshine’, Groups and combinatorics – in memory of Michio Suzuki, Adv. Stud. Pure Math. 32 (2001) 347–353.CrossRefGoogle Scholar
8
8.Norton, S. P., ‘More on moonshine’, Computational group theory (London Academic Press, 1984) 185–193.Google Scholar
9
9.Gutierrez, J. and Sevilla, D., ‘Building counterexamples to generalizations for rational functions of Ritt's decomposition Theorem’, Journal of Algebra303 (2006) 655–667.CrossRefGoogle Scholar
10
10.Sevilla, D., ‘Teoremas de Ritt y computatión de cuerpos unirracionales’, PhD Thesis, University of Cantabria, 2004.Google Scholar