Mathematical Physics

2403 Submissions

[3] viXra:2403.0143 [pdf] submitted on 2024-03-30 23:13:12

An Atypical Case of Round-Off in Mathematica

Authors: Marcello Colozzo
Comments: 5 Pages.

A Mathematica round-off case generated by a real function of a real variable, [is] not elementary expressible
Category: Mathematical Physics

[2] viXra:2403.0080 [pdf] submitted on 2024-03-17 16:59:13

Integrability of Continuous Functions And Dynamical Systems

Authors: Hans Detlef Hüttenbach
Comments: 32 Pages.

This paper consists of three parts: Starting with the field $mathbb{C}$ of complex numbers,the Banach space $mathcal{C}(V)$ of continuous, $mathbb{C}$-valued functions on a simply connected compact region $Vsubsetmathbb{C}$ is shown to decompose the topological direct sum of two complementary subspaces: a subspace of integrable and therefore analytic functions,and a subspace of un-integrable and anti-analytic functions. Introducing orientation as a central notion, orientation inversion (parity) turns out to be the complex conjugation, which maps integrable (w.r.t. positive orientation) to un-integrable functions, which are integrable w.r.t. negative orientation, and vice versa. Orientation allows the extension of complex analyticity to $mathbb{R}^2$, which ends part 1. Part 2 is devoted to the extension of analyticity to multi-dimensions.These results are then applied in part three to continuous mechanical dynamical systems, where it is shown that Hamilton-Jacoby theory yields the unrestricted integrability of any continuous, mechanical dynamical system of either parity and represents their solutions as geodesics of (integrated) action functions of positive/negative parity, i.e.: as fermionic and bosonic solutions.
Category: Mathematical Physics

[1] viXra:2403.0069 [pdf] submitted on 2024-03-15 19:09:19

Sommerfeld Functional Equation

Authors: Marcello Colozzo
Comments: 6 Pages.

We derive the well-known Sommerfeld expansion of the Fermi-Dirac integral, and then deduce a functional equation for the chemical potential which we denote here by h(y) where y is the absolute temperature in energy units.
Category: Mathematical Physics