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@ARTICLE{Heib:1052370,
author = {Heib, Tim and Bruschi, David Edward},
title = {{O}n the structural properties of {L}ie algebras via
associated labeled directed graphs},
publisher = {arXiv},
reportid = {FZJ-2026-00964, 2601.16161},
year = {2026},
abstract = {We present a method for associating labeled directed graphs
to finite-dimensional Lie algebras, thereby enabling rapid
identification of key structural algebraic features. To
formalize this approach, we introduce the concept of
graph-admissible Lie algebras and analyze properties of
valid graphs given the antisymmetry property of the Lie
bracket as well as the Jacobi identity. Based on these
foundations, we develop graph-theoretic criteria for
solvability, nilpotency, presence of ideals, simplicity,
semisimplicity, and reductiveness of an algebra. Practical
algorithms are provided for constructing such graphs and
those associated with the lower central series and derived
series via an iterative pruning procedure. This visual
framework allows for an intuitive understanding of Lie
algebraic structures that goes beyond purely visual
advantages, since it enables a simpler and swifter grasping
of the algebras of interest beyond computational-heavy
approaches. Examples, which include the Schrödinger and
Lorentz algebra, illustrate the applicability of these tools
to physically relevant cases. We further explore
applications in physics, where the method facilitates
computation of similtude relations essential for determining
quantum mechanical time evolution via the Lie algebraic
factorization method. Extensions to graded Lie algebras and
related conjectures are discussed. Our approach bridges
algebraic and combinatorial perspectives, offering both
theoretical insights and computational tools into this area
of mathematical physics.},
keywords = {Mathematical Physics (math-ph) (Other) / Quantum Physics
(quant-ph) (Other) / FOS: Physical sciences (Other)},
cin = {PGI-12},
cid = {I:(DE-Juel1)PGI-12-20200716},
pnm = {5221 - Advanced Solid-State Qubits and Qubit Systems
(POF4-522) / Verbundprojekt: German Quantum Computer based
on Superconducting Qubits (GEQCOS) - Teilvorhaben:
Charakterisierung, Kontrolle und Auslese (13N15685)},
pid = {G:(DE-HGF)POF4-5221 / G:(BMBF)13N15685},
typ = {PUB:(DE-HGF)25},
doi = {10.48550/ARXIV.2601.16161},
url = {https://juser.fz-juelich.de/record/1052370},
}