Identities and periodic oscillations of divide-and-conquer recurrences splitting at half

14.05.2019 15:15 - 16:45

Hsien-Kuei Hwang (Academica Sinica, Taipei, Taiwan)

Abstract:


Exact and asymptotic solutions of the divide-and-conquer recurrence

   f(n) = a f(floor(n/2)) + b f(ceiling(n/2)) + g(n)

are derived and examined from the perspective of periodic oscillations. Optimum conditions are derived for the continuity of the underlying periodic functions. The results are applied to more than 500 examples
in computer algorithms, arithmetic functions, combinatorial sequences, cellular automata, etc.

This talk is based on joint work with Svante Janson and Tsung-Hsi Tsai.

Organiser:

Ch. Krattenthaler

Location:

TU Wien, Dissertantenraum, Freihaus, Turm A, 8. OG., Wiedner Hauptstr. 8-10, 1040 Wien