A characterization of unicoherence in terms of separating open sets
J. Hunt (1980)
Fundamenta Mathematicae
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J. Hunt (1980)
Fundamenta Mathematicae
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Lorraine D. Lavallee (1964)
Czechoslovak Mathematical Journal
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John Kline (1924)
Fundamenta Mathematicae
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The purpose of this paper is to prove: Theorem: Suppose M is a closed connected set containing more than one point such that if g is any connected subset of M, then M-g is connected. Under these conditions M is a simple closed curve. Theorem: If M is an unbounded closed connected set which remains connected upon the removal of any unbounded connected proper subset, then M is either an open curve, a ray of an open curve or a simple closed curve J plus OP, a ray of an open curve which...
E. Paolini, L. Ulivi (2010)
Rendiconti del Seminario Matematico della Università di Padova
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A. Lelek (1976)
Colloquium Mathematicae
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