Seminár z teórie grafov - Martin Knor (19.11.2020)

vo štvrtok 19.11.2020 o 9:50 hod.


17. 11. 2020 21.51 hod.
Od: Martin Škoviera

Prednášajúci: Martin Knor (STU Bratislava)

Názov: Distance based indices in nanotubical graphs

Termín: 19.11.2020, 9:50 hod.

Prístupový kód do MS TEAMS (pre používateľov z UK): gglxxc7 
Pripojenie (pre hostí mimo UK)


Abstrakt:
Nanotubical graphs are obtained by wrapping a hexagonal grid, and then possibly closing the tube with caps. We derive asymptotics for several distance-based generalized chemical indices which are of the form $$ I^{\lambda}(G)=\sum_{u\ne v}f(u,v)dist^{\lambda}(u,v), $$ where $\lambda$ is a real number and $f(u,v)$ is a nonnegative symmetric function which is non-decreasing and which depends only on degrees of $u$ and $v$. All our results are obtained using double integrating and they show that the leading term depends on the circumference of the nanotube and not on its particular type.

This is a joint work with Vesna Andova and Riste Skrekovski


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