3 papers
math.CO2026
Further Results on the Quadratic Embedding Constants of Corona Graphs
Ferdi, Edy Tri Baskoro, Aditya Purwa Santika
The quadratic embedding constant (QEC) is a numerical invariant associated with quadratic embeddings of graphs into Hilbert spaces, and it is characterized in terms of the distance…
math.CO2025
Quadratic Embedding Constants of Corona Graphs
Ferdi, Edy Tri Baskoro, Nobuaki Obata +1
The quadratic embedding constant (QEC) of a connected graph is defined to be the maximum of the quadratic function associated with its distance matrix on a certain unit sphere of c…
math.RT2024
Kac-Moody Quaternion Lie Algebra
Ferdi, Amir Kamal Amir, Andi Muhammad Anwar
This research aims to define Kac-Moody Lie algebra in Quaternion by using the concept of Quaternification of Lie algebra. The results of this research obtained the definition of Un…