Behavioural distances measure the deviation between states in quantitative systems, such as probabilistic or weighted systems. There is growing interest in generic approaches to behavioural distances. In particular, c...
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We construct infinite families of abstract regular polytopes of type {4, p1, . . ., pn−1} from extensions of centrally symmetric spherical abstract regular n-polytopes. In addition, by applying the halving operation, ...
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We compute the fundamental solution for time-fractional diffusion Dirac-like equations, which arise from the factoriza-tion of the multidimensional time-fractional diffusion-wave equation using Dirac’s factorization ...
We compute the fundamental solution for time-fractional diffusion Dirac-like equations, which arise from the factoriza-tion of the multidimensional time-fractional diffusion-wave equation using Dirac’s factorization approach.
The demand for last-mile delivery (LMD) services worldwide increased following online sales growth, so better methods to assess efficiency issues are paramount. This work explores a data-driven approach to evaluate LM...
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The demand for last-mile delivery (LMD) services worldwide increased following online sales growth, so better methods to assess efficiency issues are paramount. This work explores a data-driven approach to evaluate LMD services and inform logistics service providers about possible improvement directions. It uses multi-directional efficiency analysis to benchmark LMD services based on process variables, such as delivery time and service cost. Then, by fitting machine learning models and using explainability algorithms with new metrics, characterizes factors that influence LMD performance. Early discussions with experts show that the approach produces understandable and integrable results that generate valuable insights, e.g., regarding the impact of each variable on service quality informing the direction for further improvement action.
For a stationary, axisymmetric, asymptotically flat, ultra-compact [i.e. containing light-rings (LRs)] object, with a Z2 north-south symmetry fixing an equatorial plane, we establish that the structure of timelike cir...
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The main goal of this work was to find a stable and accurate procedure that identifies association between relevant single nucleotide polymorphisms (SNPs) and Alzheimer’s disease (AD), but selecting sets of relevant ...
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In this paper we give a non-computer-assisted proof of the following result: if G is an even transitive group of degree 11 and has a string C-group representation with rank r ∈ {4, 5} then G ∼= PSL2(11). Moreover th...
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We present a model of relativistic elastic stars featuring scale invariance. This implies a linear mass-radius relation and the absence of a maximum mass. The most compact spherically symmetric configuration that is r...
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We present a model of relativistic elastic stars featuring scale invariance. This implies a linear mass-radius relation and the absence of a maximum mass. The most compact spherically symmetric configuration that is radially stable and satisfies all energy and causality conditions has a slightly smaller radius than the Schwarzschild light ring radius. To the best of our knowledge, this is the first material compact object with such remarkable properties in general relativity, which makes it a unique candidate for a black-hole mimicker.
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