Results 61 to 70 of about 17,517 (161)
General Fractional Calculus, Evolution Equations, and Renewal Processes
, 2011 We develop a kind of fractional calculus and theory of relaxation and diffusion equations associated with operators in the time variable, of the form $(Du)(t)=\frac{d}{dt}\int\limits_0^tk(t-\tau)u(\tau)\,d\tau -k(t)u(0)$ where $k$ is a nonnegative ...
Kochubei, Anatoly N.
core +1 more source
Robust estimation of a Markov chain transition matrix from multiple sample paths
Statistica Neerlandica, Volume 80, Issue 1, February 2026.Markov chains are fundamental models for stochastic dynamics, with applications in a wide range of areas such as population dynamics, queueing systems, reinforcement learning, and Monte Carlo methods. Estimating the transition matrix and stationary distribution from observed sample paths is a core statistical challenge, particularly when multiple ...
Lasse Leskelä, Maximilien Dreveton
wiley +1 more source
A C(K) Banach space which does not have the Schroeder-Bernstein property [PDF]
, 2011 We construct a totally disconnected compact Hausdorff space N which has clopen subsets M included in L included in N such that N is homeomorphic to M and hence C(N) is isometric as a Banach space to C(M) but C(N) is not isomorphic to C(L). This gives two
Koszmider, Piotr
core
Singular localization for Quantum groups at generic $q$
, 2013 We quantize parabolic flag manifolds and describe categories of equivariant quantum $\D$-modules on them at a singular central character. We compute global sections at any $q \in \C^*$ and we also prove a singular version of Beilinson-Bernstein ...
Backelin, Erik, Kremnizer, Kobi
core +1 more source
A tropical approach to rigidity: Counting realisations of frameworks
Journal of the London Mathematical Society, Volume 113, Issue 2, February 2026.Abstract A realisation of a graph in the plane as a bar‐joint framework is rigid if there are finitely many other realisations, up to isometries, with the same edge lengths. Each of these finitely many realisations can be seen as a solution to a system of quadratic equations prescribing the distances between pairs of points.
Oliver Clarke +6 more
wiley +1 more source
Bernstein Numbers of Embeddings of Isotropic and Dominating Mixed Besov Spaces [PDF]
, 2014 The purpose of the present paper is to investigate the decay of Bernstein numbers of the embedding from $B^t_{p_1,q}((0,1)^d)$ into the space $L_{p_2}((0,1)^d) $.
Nguyen, Van Kien
core
Communications on Pure and Applied Mathematics, Volume 79, Issue 1, Page 3-88, January 2026.Abstract We address the problem of regularity of solutions ui(t,x1,…,xN)$u^i(t, x^1, \ldots, x^N)$ to a family of semilinear parabolic systems of N$N$ equations, which describe closed‐loop equilibria of some N$N$‐player differential games with Lagrangian having quadratic behaviour in the velocity variable, running costs fi(x)$f^i(x)$ and final costs gi(
Marco Cirant, Davide Francesco Redaelli
wiley +1 more source
Algorithms for integrals of holonomic functions over domains defined by polynomial inequalities
, 2011 We present an algorithm for computing a holonomic system for a definite integral of a holonomic function over a domain defined by polynomial inequalities.
Almkvist +25 more
core +1 more source
Polymer Engineering &Science, Volume 66, Issue 1, Page 105-121, January 2026.Study on transient parison formation at various strokes during extrusion of Newtonian and viscoelastic fluids. In the presence of an offset between the mandrel and the bushing, Newtonian fluids exhibit a reduction in extrudate diameter, whereas viscoelastic fluids display diameter swelling only at flow rates exceeding a critical threshold.
Kalonji K. Kabanemi +2 more
wiley +1 more source
Mapping Thermal Conductivity at the Atomic Scale: A Step toward the Thermal Design of Materials
physica status solidi (b), Volume 263, Issue 1, January 2026.The site‐projected thermal conductivity method resolves the local thermal conduction contribution per atom by decomposing the Green–Kubo thermal conductivity tensor under the harmonic approximation. It highlights thermally active sites and “thermal defects” within disordered or amorphous materials, enabling spatially resolved insights into atomic‐scale
Chinonso Ugwumadu +3 more
wiley +1 more source