The (16,6,2) designs.
Assmus, E.F.jun., Salwach, Chester J. (1979)
International Journal of Mathematics and Mathematical Sciences
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Assmus, E.F.jun., Salwach, Chester J. (1979)
International Journal of Mathematics and Mathematical Sciences
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Greig, Melcom (2000)
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Clark, K. L., Hatfield, L. D., Key, J. D., Ward, H. N. (2003)
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Marko D. Lekop (1973)
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Katsuya Yokoi (2015)
Annales Polonici Mathematici
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This paper is concerned with strong chain recurrence introduced by Easton. We investigate the depth of the transfinite sequence of nested, closed invariant sets obtained by iterating the process of taking strong chain recurrent points, which is a related form of the central sequence due to Birkhoff. We also note the existence of a Lyapunov function which is decreasing off the strong chain recurrent set. As an application, we give a necessary and sufficient condition for the coincidence...
Jarmila Hedlíková (1977)
Mathematica Slovaca
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Landjev, Ivan, Topalova, Svetlana (1998)
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∗ This work has been partially supported by the Bulgarian NSF under Contract No. I-506/1995. In this note we construct five new symmetric 2-(61,16,4) designs invariant under the dihedral group of order 10. As a by-product we obtain 25 new residual 2-(45,12,4) designs. The automorphism groups of all new designs are computed.
Lozić, Sanja, Mudrinski, Vojislav, Žunić, Vojislav (2003)
Novi Sad Journal of Mathematics
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Jane Pitman (1960)
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