Chebyshev Polynomials, Zolotarev Polynomials, and Plane Trees

Verfasser / Beitragende:
[Yu. Kochetkov]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Mathematical Sciences, 209/2(2015-08-01), 275-281
Format:
Artikel (online)
ID: 605526230
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024 7 0 |a 10.1007/s10958-015-2502-6  |2 doi 
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100 1 |a Kochetkov  |D Yu  |u Higher School of Economics, Moscow, Russia  |4 aut 
245 1 0 |a Chebyshev Polynomials, Zolotarev Polynomials, and Plane Trees  |h [Elektronische Daten]  |c [Yu. Kochetkov] 
520 3 |a A polynomial with exactly two critical values is called a generalized Chebyshev polynomial (or Shabat polynomial). A polynomial with exactly three critical values is called a Zolotarev polynomial. Two Chebyshev polynomials f and g are called Z-homotopic if there exists a family pα, α ϵ $$ \epsilon $$ [0, 1], where p0 = f, p1 = g, and pα is a Zolotarev polynomial if α ϵ $$ \epsilon $$ (0, 1). As each Chebyshev polynomial defines a plane tree (and vice versa), Z-homotopy can be defined for plane trees. In this work, we prove some necessary geometric conditions for the existence of Z-homotopy of plane trees, describe Z-homotopy for trees with five and six edges, and study one interesting example in the class of trees with seven edges. 
540 |a Springer Science+Business Media New York, 2015 
773 0 |t Journal of Mathematical Sciences  |d Springer US; http://www.springer-ny.com  |g 209/2(2015-08-01), 275-281  |x 1072-3374  |q 209:2<275  |1 2015  |2 209  |o 10958 
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950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Mathematical Sciences  |d Springer US; http://www.springer-ny.com  |g 209/2(2015-08-01), 275-281  |x 1072-3374  |q 209:2<275  |1 2015  |2 209  |o 10958