Algebraic Graph Theory International Webinar (7.2.2023)

v utorok 7.2.2023 o 19:00 hod.

06. 02. 2023 15.22 hod.
Od: Róbert Jajcay

The organizers of the Algebraic Graph Theory International Webinar would like to invite you to join us and other colleagues on February 7, 2023, at 7pm Central European Summer Time (= 6pm UTC), for the next presentation delivered by Antonina Khramova. 

The title: Constructing cospectral hypergraphs

Spectral hypergraph theory mainly concerns using hypergraph spectra to obtain structural information about the given hypergraphs. The study of cospectral hypergraphs is important since it reveals which hypergraph properties cannot be deduced from their spectra. In this talk, we show a new method for constructing cospectral uniform hypergraphs using two well-known hypergraph representations: adjacency tensors and neighbor matrices. The method is inspired by WQH-switching (Wang, Qiu, Hu, 2019), also known in the literature as modified GM-switching. The talk is based on joint work with Aida Abiad (

The Zoom link for this semester is:
Meeting ID: 871 9332 0713
Passcode: 653250

Further details may be found at

where you can also find the slides and the recordings of our previous presentations. Also, if you wish to advertise an AGT friendly conference on this page, please send us the link.  

Hoping to see you at the webinar, and wishing you all the best. 

Isabel HubardRobert Jajcay and Primoz Potocnik