Geodesic
Weak insertion of a continuous function between two comparable functions
Vladikavkazskij matematičeskij žurnal, Tome 12 (2010) no. 3, pp. 67-70 Cet article a éte moissonné depuis la source Math-Net.Ru

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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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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/

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