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HLXiON δ Ω Intent Σ Logic Ψ Synth Π Reason Γ Memory Processing: math.NA
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The search results for "math.NA" (numerical analysis) encompass a variety of topics related to mathematical foundations and applications. These include the exploration of algorithmic music composition's mathematical underpinnings, an extension of Tsallis' non-extensive entropy incorporating affinities between microstates, and the mathematical limits of computational resolution in imaging. Additionally, the results cover compressive sensing in radio-interferometry and a rigorous analysis of partition function zeros in phase transitions. Each study highlights the integration of mathematical theories in understanding complex systems and phenomena.
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arxiv.org
Metamathematics of Algorithmic Composition

This essay recounts my personal journey towards a deeper understanding of the mathematical foundations of algorithmic music composition. I do not spend much time on specific mathematical algorithms used by composers; rather, I focus on general issues such as fundamental limits and possibilities, by …

cs.SD eess.AS
arxiv.org
Affinity-based extension of non-extensive entropy and statistical mechanics

Tsallis' non-extensive entropy is extended to incorporate the dependence on affinities between the microstates of a system. At the core of our construction of the extended entropy ($\mathcal{H}$) is the concept of the effective number of dissimilar states, termed the effective diversity ($\mathitΔ$…

q-bio.QM q-bio.PE
arxiv.org
Mathematical Theory of Computational Resolution Limit in Multi-dimensions

Resolving a linear combination of point sources from their band-limited Fourier data is a fundamental problem in imaging and signal processing. With the incomplete Fourier data and the inevitable noise in the measurement, there is a fundamental limit on the separation distance between point sources …

eess.IV eess.SP
arxiv.org
Compressive radio-interferometric sensing with random beamforming as rank-one signal covariance projections

Radio-interferometry (RI) observes the sky at unprecedented angular resolutions, enabling the study of several far-away galactic objects such as galaxies and black holes. In RI, an array of antennas probes cosmic signals coming from the observed region of the sky. The covariance matrix of the vector…

eess.IV
arxiv.org
Partition function zeros at first-order phase transitions: A general analysis

We present a general, rigorous theory of partition function zeros for lattice spin models depending on one complex parameter. First, we formulate a set of natural assumptions which are verified for a large class of spin models in a companion paper [BBCKK2, math-ph/0304007]. Under these assumptions, …

math-ph math.CV
arxiv.org
Numerical analyses of a quantum-theoretic eight-dimensional Yang-Mills field

This paper has been superseded by math-ph/0102032, "Bures geometry of the three-level quantum systems. II".…

math-ph hep-th math.DG quant-ph
arxiv.org
Five-Dimensional Tangent Vectors in Space-Time: II. Differential-Geometric Approach

In this part of the series five-dimensional tangent vectors are introduced first as equivalence classes of parametrized curves and then as differential-algebraic operators that act on scalar functions. I then examine their basic algebraic properties and their parallel transport in the particular cas…

math-ph gr-qc hep-th