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Borsík, Ján ; Doboš, Jozef
О функциях, композиция с метрикой которых является метрикой. (Russian) [Functions whose composition with every metric is a metric]. Mathematica Slovaca, vol. 31 (1981), issue 1, pp. 3-12
MSC: 54C60, 54E35 | MR 619503 | Zbl 0482.54021
References:
[1] JARNÍK V.: Differenciální počet II. Academia, Praha 1976.
[2] KAPLANSKY, I: Set theory and metric spaces. Allyn and Bacon, Boston 1972. MR 0453533 | Zbl 0242.00006
[3] KEЛЛИ И.Л.: Oбщaя тoпoлoгия. Hayкa, Mocквa 1968.
[4] NAGY J.: Vybrané partie z moderní matematiky. SNTL, Praha 1976. MR 0497400
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