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775 papers in math.FA · page 8

  1. math-ph 2026-04-10 reviewed
    Spectral data sets periodicity in ergodic quantum channels

    Periodicity in Ergodic Quantum Processes

    Owen Ekblad +1

  2. math.SP 2026-04-10 reviewed
    Empirical operators converge spectrally with discontinuous kernels

    Spectral convergence of empirical integral operators with discontinuous kernels

    Manuel Dias

  3. math.FA 2026-04-10 reviewed
    Phelps theorem extends to norm-attaining functionals on C(Ω

    An extension of Phelps theorem to spaces of vector-valued functions

    Saurabh Dwivedi

  4. math.FA 2026-04-09 reviewed
    Density of continuity points forces Radon-Nikodým property

    Weak$^*$-weak points of continuity on the state spaces

    Saurabh Dwivedi

  5. math.FA 2026-04-09 reviewed
    Doubly power-bounded elements decompose when spectrum is finite

    Spectral decomposition of doubly power-bounded elements in Banach algebras

    Osamu Hatori +1

  6. math.FA 2026-04-09 reviewed
    BCH series converges near origin in quasi-Banach Lie algebras

    Local Lie Theory in Quasi-Banach Lie Algebras: Convergence of the BCH Series and Geometric Implications

    Nassim Athmouni +5

  7. math.FA 2026-04-09 reviewed
    Rough Calderón-Zygmund drifts permit global mild solutions

    Global mild solutions for a transport-diffusion equation with a rough drift

    Diego Chamorro (LaMME) +2

  8. math.OC 2026-04-08 reviewed
    Inertial method solves non-Lipschitz monotone variational inclusions

    Non-Lipschitz Inertial Contraction-Type Method for Monotone Variational Inclusion problems

    Feeroz Babu +3

  9. math.FA 2026-04-08 reviewed
    Boundary white noise extends 1D heat states to complex rhombus

    Bergman-space regularity for the heat equation with white-noise boundary forcing

    Micu Sorin +2

  10. math.SP 2026-04-08 reviewed
    Eigenvalue collisions allow exotic spectrum preservers

    Eigenvalue collision and exotic preservers on semisimple operators

    Alexandru Chirvasitu

  11. math.FA 2026-04-08 reviewed
    Balanced shifts satisfy von Neumann inequality on the ball

    von Neumann Inequality for a class of Doubly Contractive Weighted Shifts

    Soumyadip Dey +2

  12. math.FA 2026-04-08 reviewed
    Porous sets refine Carleson packing on dyadic covers

    Carleson families of cubes related to porous sets

    Andrei V. Vasin

  13. math.AP 2026-04-08 reviewed
    Scaled fractional potential limit recovers gradient potential

    Bourgain-Brezis-Mironescu formula for Riesz Potentials

    Alejandro Claros +1

  14. math.FA 2026-04-08 reviewed
    Boundedness on regular de Branges spaces requires affine symbols

    Composition operators on de Branges spaces of entire functions

    Bharti Garg +2

  15. math.FA 2026-04-08 reviewed
    Only affine symbols bound composition operators on de Branges spaces

    Composition operators on de Branges spaces of entire functions

    Bharti Garg +2

  16. cs.LG 2026-04-08 reviewed
    Sparse networks recover functionals with fewer samples

    Sparse-Aware Neural Networks for Nonlinear Functionals: Mitigating the Exponential Dependence on Dimension

    Jianfei Li +4

  17. cs.LG 2026-04-08 reviewed
    Convolutional sparsity tames dimension dependence in functional learning

    Sparse-Aware Neural Networks for Nonlinear Functionals: Mitigating the Exponential Dependence on Dimension

    Jianfei Li +4

  18. math.FA 2026-04-08 reviewed
    Real ℓ_∞ satisfies the BPBp for numerical radius unlike ℓ_1 ⊕_∞ c_0

    The Bishop-Phelps-Bollob\'as property for the numerical radius: a Zizler-type approach

    Sun Kwang Kim +3

  19. math.FA 2026-04-07 reviewed
    Unbounded Toeplitz operators on model spaces commute with modified shifts

    Some properties of unbounded truncated Toeplitz operators

    Ali Chettih +2

  20. math.FA 2026-04-07 reviewed
    Deterministic sequence approximates identity from PSD matrices

    Greedy sparsifications of sums of positive semidefinite matrices

    Grigory Ivanov

  21. math.FA 2026-04-07 reviewed
    Deterministic picks approximate identity to eps with O(M log d / eps^2) terms

    Greedy sparsifications of sums of positive semidefinite matrices

    Grigory Ivanov

  22. math.QA 2026-04-07 reviewed
    Multigraphs recover quantum channel confusability graphs by edge count

    A multigraph approach to confusability in quantum channels

    Sk Asfaq Hossain +1

  23. math.PR 2026-04-07 reviewed
    Unique solutions exist for vorticity equation with fractional Brownian noise

    Well-posedness and Hurst parameter estimation for fluid equations driven by fractional transport noise

    Alexandra Blessing Neamtu +2

  24. math.FA 2026-04-07 reviewed
    Critical oscillation embeddings gain logarithmic Hansson refinements

    Oscillation Functionals and Embeddings in Rearrangement-Invariant Spaces

    Joaquim Martin

  25. math.OC 2026-04-07 reviewed
    Epigraphic control gives square-root displacement for minimizer sets

    Intrinsic perturbation scale for certified oracle objectives with epigraphic information

    Karim Bounja +2

  26. math.FA 2026-04-07 reviewed
    Four existence theorems reduce to one another

    Hartman-Stampacchia theorem, Gale-Nikaido-Debreu lemma, and Brouwer and Kakutani fixed-point theorems

    Pascal Gourdel (PSE +5

  27. math.FA 2026-04-07 reviewed
    In Lipschitz-free spaces diameter two equals attaining diameter two

    A note on attaining diameter two properties in Lipschitz-free spaces

    Jaan Kristjan Kaasik

  28. math.NT 2026-04-07 reviewed
    Moment bounds for twisted random sums match chaos predictions

    Partial sums of random multiplicative functions with supercritical divisor twists

    Jad Hamdan

  29. math.RT 2026-04-07 reviewed
    Generalized Fourier transform interchanges x and deformed derivatives

    A Generalized Fourier Transform and a Smooth Analogue of Dunkl Operators

    Temma Aoyama

  30. math.FA 2026-04-07 reviewed
    Equal weights force flatness in quadratically hyponormal shifts

    Propagation Phenomena for Operator-Valued Weighted Shifts

    Raul E. Curto +3

  31. math.FA 2026-04-07 reviewed
    Equal weights force flatness in hyponormal weighted shifts

    Propagation Phenomena for Operator-Valued Weighted Shifts

    Raul E. Curto +3

  32. math.LO 2026-04-07 reviewed
    Reid class classification extends to non-Archimedean Banach spaces

    Structural Hierarchy of Reid Class of non-Archimedean Banach Spaces

    Tomoki Mihara

  33. math.FA 2026-04-06 reviewed
    Bounded extension operator makes forms commute with derivative on Lipschitz domains

    Uniformly Bounded Cochain Extensions and Uniform Poincar\'e Inequalities

    Erik Nilsson +1

  34. math.OA 2026-04-06 reviewed
    Torsion-free acylindrically hyperbolic groups satisfy relative ISR

    On Relative Invariant Subalgebra Rigidity Property

    Tattwamasi Amrutam

  35. math.OA 2026-04-06 reviewed
    Two parametrizations agree on gauge-invariant ideals for product systems

    Gauge-invariant ideal structure of C*-algebras associated with proper product systems over $\mathbb{Z}_+^d$

    Joseph A. Dessi

  36. math.AP 2026-04-06 reviewed
    Refined Trudinger-Moser inequality attains its maximum in fractional dimensions

    A Trudinger-Moser inequality under a refined constraint in fractional dimensions and extremal functions

    Ruan Diego da Silva Paiva +1

  37. math.FA 2026-04-06 reviewed
    Piecewise quadratic homeomorphisms admit W^{2,1} diffeomorphism approximations

    $W^{2,1}$ approximation of planar Sobolev homeomorphisms by smooth diffeomorphisms

    Luigi D'Onofrio

  38. math.FA 2026-04-05 reviewed
    Combinatorial formula found for recursive operator sequences

    A Combinatorial Formula for Recursive Operator Sequences and Applications

    Raul E. Curto +3

  39. math.PR 2026-04-04 reviewed
    Product TV distance bounded below by constant times averaged version

    A homogenization principle for total variation

    Aryeh Kontorovich

  40. math.CV 2026-04-04 reviewed
    Rational error products follow Hadamard asymptotics

    Hadamard-Type Asymptotics for Products of Best Rational Approximation Errors

    Vasiliy A. Prokhorov

  41. math.FA 2026-04-04 reviewed
    Memory functional strictly contains continuous functions

    A Functional-Analytic Framework for Nonlinear Adaptive Memory: Hierarchical Kernels, State-Dependent Sensitivity, and Memory-Dependent Functionals

    Jiahao Jiang

  42. math.AP 2026-04-03 reviewed
    Schrödinger singularities fixed by initial wave front sets

    Characterization of spacetime singularities for the Schr\"odinger equation by initial state

    Takeru Fujii +1

  43. math.FA 2026-04-03 reviewed
    Dunkl-Williams constant hits 2√2 in ℓ₂-ℓ₁ space

    Some results on the Dunkl-Williams constant

    Javier Alonso +1

  44. math.FA 2026-04-03 reviewed
    Hardy-Lorentz spaces gain sharp maximal-function theory on ultra-RD-spaces

    Real-Variable Theory of Hardy--Lorentz Spaces on Quasi-Ultrametric Spaces of Homogeneous Type with Reverse-Doubling Property

    Chenfeng Zhu +4

  45. math.FA 2026-04-02 reviewed
    Order convergence analytic iff α-Fatou for some countable ordinal

    A Classification of Order Convergence via a Transfinite Fatou Hierarchy

    Antonio Avil\'es +3

  46. math.OA 2026-04-02 reviewed
    Density space non-compact in Bures metric for infinite-dimensional algebras

    The Bures metric and the quantum metric on the density space of a C*-algebra: the non-unital case

    Konrad Aguilar +6

  47. math.FA 2026-03-25 reviewed
    Weak limits of operator powers form large semigroups generically

    Weak limit semigroup in operator theory and ergodic theory

    Tanja Eisner +1

  48. math.GR 2026-03-25 reviewed
    Amalgamated products preserve matricial field properties

    A new source of purely finite matricial fields

    David Gao +3

  49. math.OA 2026-03-25 reviewed
    Self-adjoint maps on Hilbert C*-modules vanish if zero on dense submodules

    Bounded modular functionals and operators on Hilbert C*-modules that are regular

    Michael Frank +1

  50. quant-ph 2026-03-25 reviewed
    Tight l_p norm inequality conjectured for every finite dimension

    A conjecture on a tight norm inequality in the finite-dimensional l_p

    A. S. Holevo +1