Ammann Bars and Quasicrystals.
T. Stehling (1992)
Discrete & computational geometry
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T. Stehling (1992)
Discrete & computational geometry
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P. Goossens (1992)
Discrete & computational geometry
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P. Schmitt (1987)
Discrete & computational geometry
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G. Purdy (1988)
Discrete & computational geometry
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M. Pellegrini (1994)
Discrete & computational geometry
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O. Schwarzkopf, M. de Berg, K. Dobrindt (1995)
Discrete & computational geometry
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J.E. Goodman, R. Pollack (1993)
Discrete & computational geometry
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A. Steiner, E. Steiner (1969)
Fundamenta Mathematicae
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Yan-Kui Song (2013)
Czechoslovak Mathematical Journal
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In this paper, we prove the following statements: (1) There exists a Tychonoff star countable discrete closed, pseudocompact space having a regular-closed subspace which is not star countable. (2) Every separable space can be embedded into an absolutely star countable discrete closed space as a closed subspace. (3) Assuming , there exists a normal absolutely star countable discrete closed space having a regular-closed subspace which is not star countable.