About this article
Published Online: Oct 04, 2023
Page range: 75 - 86
Accepted: Jun 30, 2023
DOI: https://doi.org/10.2478/forma-2023-0008
Keywords
© 2023 Sebastian Koch, published by Sciendo
This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Public License.
In this article regular graphs, both directed and undirected, are formalized in the Mizar system [7], [2], based on the formalization of graphs as described in [10]. The handshaking lemma is also proven.