Now showing items 1-2 of 2

    • Partition functions for states models on signed graphs 

      Ferrando Piedrabuena, Erik (Universitat Politècnica de Catalunya, 2020-02-25)
      Bachelor thesis
      Open Access
      Covenantee:   Univerzita Karlova
      There are many models of physical systems based in unsigned graph theory, however there are some systems that cannot be modelled by unsigned graphs and that is the reason of signed graph states models. For these models, ...
    • Removal lemmas in sparse graphs 

      Lamaison Vidarte, Ander (Universitat Politècnica de Catalunya, 2015-07)
      Bachelor thesis
      Open Access
      In this work we explain and prove the graph removal lemma, both in its dense and sparse cases, and show how these can be applied to finite groups to obtain arithmetic removal lemmas. We show how the concept of regularity ...