Geodesic
Weak insertion of a~continuous function between two comparable functions
Vladikavkazskij matematičeskij žurnal, Tome 12 (2010) no. 3, pp. 67-70

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We give a sufficient condition for insertion of a continuous function between two comparable real-valued functions in terms of lower cut sets. 
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     author = {M. Mirmiran},
     title = {Weak insertion of a~continuous function between two comparable functions},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
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     number = {3},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2010_12_3_a6/}
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M. Mirmiran. Weak insertion of a~continuous function between two comparable functions. Vladikavkazskij matematičeskij žurnal, Tome 12 (2010) no. 3, pp. 67-70. http://geodesic.mathdoc.fr/item/VMJ_2010_12_3_a6/