By means of the Lie algebra expansion method, the centrally extended conformal algebra in
two dimensions and the bms _ 3 bms 3 algebra are obtained from the Virasoro algebra. We …

In this work, we expand the hidden‐Lorentz superalgebra underlying supergravity, reaching
a (hidden) Maxwell superalgebra. The latter can be viewed as an extension involving …

The study of the relation between Lie algebras and groups, and especially the derivation of
new algebras from them, is a problem of great interest in mathematics and physics, because …

We present a generalization of the standard Inönü–Wigner contraction by rescaling not only
the generators of a Lie superalgebra but also the arbitrary constants appearing in the …

In this work we obtain known and new supersymmetric extensions of diverse asymptotic
symmetries defined in three spacetime dimensions by considering the semigroup expansion …

In this paper we describe an analytic method able to give the multiplication table (s) of the
set (s) involved in an S‐expansion process (with either resonance or 0S‐resonant …

In this paper we show that certain three-dimensional isometry algebras, specifically those of
type I, II, III and V (according to Bianchi's classification), can be obtained as expansions of …

According to the literature, the S-expansion procedure involving a finite semigroup is valid
no matter what the structure of the original Lie (super) algebra is; however, when something …

By means of a generalization of the Maurer–Cartan expansion method, we construct a
procedure to obtain expanded higher-order Lie algebras. The expanded higher-order …

The S-expansion method is a generalization of the Inönü-Wigner (IW) contraction that allows
to study new non-trivial relations between different Lie algebras. Basically, this method …