arXiv subjects
Publications and source records attributed to Godofredo Iommi Amunategui.
In this note we envisage the relation existing between the Lie Groups and the Theory of Complex Variables. In particular, it is shown that the dimensions of the irreducibles representations of $SU(N)$ may be written in terms of the Eisenstein integers and an identity is built up between the imaginary parts of the dimensions of the irreducible representations of the Lie Groups $SU(3)$ and $Sp(4)$.
This note presents a procedure to determine the reduction of the irreducible and the induced characters of the symmetric group in terms of the irreducible and induced characters of the hyperoctahedral group Key Words: Symmetric Group, Hyperoctahedral group, Representations, Characters, Re- duction.
This article analyses some paragraphs of the Dissertatio de Arte Combinatoria (1666) where G.W. Leibniz considers the syntax of a language with a given number of primitive terms. We propose a new formulation which generalizes the philosopher conception of such a formal system.
This article considers the Dissertatio de Arte Combinatoria, published in 1666 and relatively neglected by Leibniz s scholars. However in recent times the tide seems to be changing. Our work presents three main parts (sections II, III and IV, respectively). The first one exposes the contributions of M. Serres and E. Knobloch, viewed from our stand-point. The second one emphazises the role played by the symmetric group as the underlying mathematical structure of the Opus. Finally we treat the caput variationis which, in our opinion, is the fundamental concept of the Dissertatio. Moreover, it is suggested that the importance of such a theoretical insight may be traced in many aspects of Leibniz s subsequent thought.
In The Structure of Appearance Nelson Goodman aims at describing the world as composed of individuals. He builds his system on phenomenal qualities or qualia. We propose a mathematical model for the qualia based on a dynamical system, the so-called Discrete Cat Mapping.
Consideration of a classification of the number of partitions of a natural number according to the members of sub-partitions differing from unity leads to a non-recursive formula for the number of irreducible representations of the symmetric group Sn. This article was published, long ago, under the title A non-recursive expression for the number of irreducible representations of the Symmetric Group Sn, Physica 114A, 1982, 361-364, North-Holland Publishing Co. The Introduction has been, somewhat, improved, however, the handmade result remains unproved.
The concept of caput variationis plays a fundamental role in Leibniz s Dissertatio de Arte Combinatoria, published in 1666. Hereafter we propose an interpretation of the caput based on the notion of induced character of a group introduced par Georg Frobenius in 1900.
In the Structure of Appearance and in Problems and Projects, Nelson Goodman has constructed a theory of complexity whose elements are the predicates of a system. One of his main results is a closed formula to evaluate v[n-pl], the maximum complexity value of an n-place predicate. Up to this day no procedure has been found to reduce v[n-pl], i.e., to write it in terms of (n-1)-place predicates. In this article we propose elementary combinatorial algorithms to carry out such a reduction.