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We introduce a general class of generating functionals for the calculation of quantum-mechanical expectation values of arbitrary functionals of fluctuating paths with fixed end points in configuration or momentum space. The generating…

Quantum Physics · Physics 2009-10-31 Hagen Kleinert , Axel Pelster , Michael Bachmann

We present Functional Mean Flow (FMF) as a one-step generative model defined in infinite-dimensional Hilbert space. FMF extends the one-step Mean Flow framework to functional domains by providing a theoretical formulation for Functional…

Machine Learning · Computer Science 2025-11-18 Zhiqi Li , Yuchen Sun , Greg Turk , Bo Zhu

We consider the isotropic perimeter generating functions of three-choice, imperfect, and 1-punctured staircase polygons, whose 8th order linear Fuchsian ODEs are previously known. We derive simple relationships between the three generating…

Mathematical Physics · Physics 2016-07-11 M. Assis , M. van Hoeij , J-M. Maillard

In this paper starting process with the infinite number of types of particles \mu(t) generate stopped branching process \xi(t), if by falling of the first one into the non empty set S process stops. Here we consider the generating…

Statistics Theory · Mathematics 2011-08-09 Ostap Okhrin

Through three examples we illustrate some of the concepts and ingredients required for pattern formation at mesoscopic scales. Two examples build on microscopic models where mesoscopic patterns emerge from homogeneous ground states driven…

Pattern Formation and Solitons · Physics 2016-08-15 A. R. Bishop , K. Ø. Rasmussen , J. Röder , T. Lookman , A. Saxena , Andrea Vanossi , Panayotis Kevrekidis

Consider a metric graph G with set of vertices V. Assume that for every vertex in V one is given a Wentzell boundary condition. It is shown how one can construct the paths of a Brownian motion on G such that its generator - viewed as an…

Probability · Mathematics 2010-12-07 Vadim Kostrykin , Jürgen Potthoff , Robert Schrader

Understanding the generative mechanism of a natural system is a vital component of the scientific method. Here, we investigate one of the fundamental steps toward this goal by presenting the minimal generator of an arbitrary binary Markov…

Statistical Mechanics · Physics 2018-02-14 J. Ruebeck , R. G. James , J. R. Mahoney , J. P. Crutchfield

This paper concentrates on the set $\mathcal{V}_n$ of weighted Dyck paths of length $2n$ with special restrictions on the level of valleys. We first give its explicit formula of the counting generating function in terms of certain weight…

Combinatorics · Mathematics 2021-12-28 Yidong Sun , Qianqian Liu , Yanxin Liu

We find a generating function expressed as a continued fraction that enumerates ordered trees by the number of vertices at different levels. Several Catalan problems are mapped to an ordered-tree problem and their generating functions also…

Combinatorics · Mathematics 2007-05-23 Mahendra Jani , Robert G. Rieper

Consider a single walker on the slit plane, that is, the square grid Z^2 without its negative x-axis, who starts at the origin and takes his steps from a given set S. Mireille Bousquet-Melou conjectured that -- excluding pathological cases…

Combinatorics · Mathematics 2007-05-23 Martin Rubey

We have derived the perimeter generating function of a model of punctured staircase polygons in which the internal staircase polygon is rotated by a 90degree angle with respect to the outer staircase polygon. In one approach we calculated a…

Statistical Mechanics · Physics 2015-06-25 Iwan Jensen , Andrew Rechnitzer

Closed-form generating functions for counting one-face rooted hypermaps with a known number of darts by number of vertices and edges is found, using matrix integral expressions relating to the reduced density operator of a bipartite quantum…

Combinatorics · Mathematics 2015-01-28 Jacob P. Dyer

For a given function from a set to itself, we can define a directed graph called the functional graph, where the vertices are the elements of the set, and the edges are all the pairs of inputs and outputs for the function. In this article…

Combinatorics · Mathematics 2025-09-23 Tadahisa Nara

In this paper, we investigate the latent geometry of generative diffusion models under the manifold hypothesis. For this purpose, we analyze the spectrum of eigenvalues (and singular values) of the Jacobian of the score function, whose…

Machine Learning · Statistics 2025-04-14 Enrico Ventura , Beatrice Achilli , Gianluigi Silvestri , Carlo Lucibello , Luca Ambrogioni

We call a continuous path of polygons decreasing if the convex hulls of the polygons form a decreasing family of sets. For an arbitrary polygon of more than three vertices, we characterize the polygons contained in it that can be reached by…

Metric Geometry · Mathematics 2025-06-09 Isaac Kulp , Charlotte Ochanine , Logan Richard , Leonel Robert , Scott Whitman

The hypergeometric distribution is a popular distribution, whose properties have been extensively investigated. Generating functions of this distribution, such as the probability-generating function, the moment-generating function, and the…

Probability · Mathematics 2024-07-31 Ken Yamamoto

We describe generating functions for several important families of classical symmetric functions and shifted Schur functions. The approach is originated from vertex operator realization of symmetric functions and offers a unified method to…

Combinatorics · Mathematics 2020-08-10 Naihuan Jing , Natasha Rozhkovskaya

We define matrix models that converge to the generating functions of a wide variety of loop models with fugacity taken in sets with an accumulation point. The latter can also be seen as moments of a non-commutative law on a subfactor planar…

Operator Algebras · Mathematics 2015-05-20 A. Guionnet , V. F. R. Jones , D. Shlyakhtenko , P. Zinn-Justin

In this paper, we introduce a new method for computing generating functions with respect to the number of descents and left-to-right minima over the set of permutations which have no consecutive occurrences of a pattern that starts with 1.

Combinatorics · Mathematics 2012-01-04 Miles Eli Jones , Jeffrey B. Remmel

We introduce the hydra continued fractions, as a generalization of the Rogers-Ramanujan continued fractions, and give a combinatorial interpretation in terms of shift-plethystic trees. We then show it is possible to express them as a…

Combinatorics · Mathematics 2020-09-11 Miguel Mendez