ELFT HÍRADÓ

[Balazs Dora <dora.balazs AT ttk.bme.hu>]

                      MEGHÍVÓ








    a Szilárd Leó-Kollokvium előadására:


                 Kertész János
                       (CEU)




“Some new results in Network Science"


Kivonat: Following extensive work on the structure and dynamics of 
complex networks, research has increasingly moved beyond graphs with 
static, binary interactions to encompass temporal, multilayer, 
higher-order, interdependent, and physical networks. In this talk, I 
will focus on the latter two. a) Interdependent networks are a class of 
multilayer networks characterized by two types of links: connectivity 
and dependency, as observed, e.g., in infrastructure and ecological 
systems. Such networks exhibit heightened sensitivity to disruptions: 
the percolation transition from a functional state with a giant 
component to a fragmented state is often discontinuous and occurs via a 
macroscopic cascade. Hyperscaling arguments indicate that the associated 
hybrid critical phenomena are characterized by a combination of both 
mean-field spinodal exponents and d-dimensional corrections. b) Physical 
networks arise when nodes and links are physical objects - such as in 
the brain - introducing constraints due to volume exclusion that 
directly affect network topology. For a simple model, the so-called 
linear physical network (named for the straight-line geometry of its 
links), one can define a meta-graph that enables an exact mapping to 
independent sets, a central concept in graph theory. This mapping makes 
it possible to analytically determine both the onset of physical 
constraints and the emergence of jamming, a state in which no additional 
links can be added due to the constraints.


Helye: BME Fizikai Intézet, Fizika Tanszék
Budafoki út 8. F-épület, 2. emelet, 13-as terem


Ideje: 2026. április 21. (kedd), 14:30.
Kapunyitás 14:14-től.
Program: http://physics.bme.hu/kollokvium


Minden érdeklődőt örömmel várunk!




Dóra Balázs és Zaránd Gergely