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775 papers in math.FA · page 15
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Tetrablock contraction lifts without meeting prior necessary condition
Rational dilation of tetrablock contractions revisited
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BMO condition decides L2 boundedness of symmetric operator-valued CZOs
An operator-valued $T1$ theory for symmetric CZOs
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Proximal quasi-normal structure yields best proximity points
Proximal quasi-normal structure and existence of best proximity points
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Bergman norms estimated sharply from real parts
Harmonic conjugates on Bergman spaces induced by doubling weights
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Additive jointly separating maps admit partial descriptions
Additive jointly separating maps and ring homomorphisms
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Inequalities compare algebra multiplications on Banach spaces
Some Inequalities for Continuous Algebra-Multiplications on a Banach Space
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Subspaces of bounded affine functions are proximinal
A note on the best approximation in spaces of affine functions
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Commutator boundedness equivalent to BMO for maximal functions
Commutators of maximal functions on spaces of homogeneous type and their weighted, local versions
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Splitting chains exist independently of ZFC
Splitting chains, tunnels and twisted sums
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Balayage of charges links to domain geometry for subharmonic classes
Classical Balayage of Charges and Measures
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Essential numerical range detects spectral pollution in unbounded approximations
The essential numerical range for unbounded linear operators
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Conditional probability defined in Renyi spaces
Conditional probability in Renyi spaces
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Truncation regularization has no saturation index
On truncated spectral regularization for an ill-posed evolution equation
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Multi-cubic mappings satisfy a stable functional equation
On an equation characterizing multi-cubic mappings and its stability and hyperstability
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Kaczmarz frames for singular measures match model subspace boundaries
Model subspaces techniques to study Fourier expansions in L^2 spaces associated to singular measures
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Closed range of summed weighted composition operators characterized
Finite sum of weighted composition operators with closed range
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Multiplier property forces Sobolev regularity on torus functions with zeros
Uncertainty Principles for Fourier Multipliers
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Zero-product condition fixes linear maps D and T on standard algebras
Linear maps characterized by special products on standard operator algebras
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Lattice isomorphism recovers homeomorphism on compact spaces
Lattice isomorphisms between certain sublattices of continuous functions
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Besov spaces with slow smoothness embed optimally outside Lorentz-Karamata scale
Optimal local embeddings of Besov spaces involving only slowly varying smoothness
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Hausdorff operators studied on upper half-plane Bergman spaces
Hausdorff operators on Bergman spaces of the upper half plane
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Conditions guarantee Hermitian solutions to nonlinear matrix equation
Solutions of a class of nonlinear matrix equations
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Unitary corners admit SVD when projections meet geometric tests
Unitary operators with decomposable corners
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Table lists best-known packings in complex projective space
Game of Sloanes: Best known packings in complex projective space
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Bibasic sequences converge in order exactly when partial sums are bounded
Bibasic sequences in Banach lattices
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LIP isomorphism turns multiplicative Asplund maps into additive ones
A Link Between the Multiplicative and Additive Functional Asplund's Metrics
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Algebraic assumptions enable CZ theory for von Neumann algebras
Algebraic Calder\'on-Zygmund theory
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C[0,1] contains every separable Banach space as isometric subspace
Embeddability, representability and universality involving Banach spaces
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Littlewood-Paley and Lusin functions bounded on Morrey spaces for Schrödinger operators
Morrey spaces for Schr\"odinger operators with certain nonnegative potentials, Littlewood-Paley and Lusin functions on the Heisenberg groups
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Supremum-norm spaces are duals with atomic preduals
Atomic decompositions, two stars theorems, and distances for the Bourgain-Brezis-Mironescu space and other big spaces
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Skew-Hermitian maps on ideal spaces equal commutators with fixed self-adjoint a
Skew-Hermitian operators in real Banach spaces of self-adjoint compact operators
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Essential distances yield extended fixed point theorems
New coincidence point and fixed point theorems for essential distances and $e^{0}$-metrics
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Proof supplies Haagerup's missing characterization of WEP
On a Characterization of the Weak Expectation Property (WEP)
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Primitive ideals characterized for labelled graph C*-algebras
Primitive Ideals of Labelled Graph $C^*$-algebras
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Bounded Weyl symbols imply bounded Toeplitz operators
Weyl symbols and boundedness of Toeplitz operators
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Subharmonic volume average bounded by 2n^{3/2} times surface average
Improved Bounds for Hermite-Hadamard Inequalities in Higher Dimensions
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Numerical radius to power r bounded by norm power minus deviation term
Further Inequalities for the Numerical Radius of Hilbert Space Operators
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Lifting theorem reduces noncommutative analyticity to one variable
The royal road to automatic noncommutative real analyticity, monotonicity, and convexity
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Dichotomy of Hamiltonian matrix yields Riccati solutions
Dichotomous Hamiltonians and Riccati equations for systems with unbounded control and observation operators
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Time changes transform curvature bounds with explicit formulas
Curvature-dimension conditions for diffusions under time change
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Schmidt subspaces of Hankel operators are model-space images
The structure of Schmidt subspaces of Hankel operators: a short proof
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Biorthogonal sequences on dense subspaces form generalized Riesz systems
Generalized Riesz systems and quasi bases in Hilbert space
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Chaos fails to imply any weighted U-frequent hypercyclicity
$\mathcal{U}$-Frequent hypercyclicity notions and related weighted densities
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Hodge theory yields energy conservation for critical weak solutions on manifolds with边界
Hodge-theoretic analysis on manifolds with boundary, heatable currents, and Onsager's conjecture in fluid dynamics
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Group algebras are essentially left φ-contractible only if groups are compact
A note on essentially left $\phi$-contractible Banach algebras
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Poincaré disk over C*-algebra gets non-commutative Kähler structure
A non commutative K\"ahler structure on the Poincar\'e disk of a C*-algebra
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Operator approximates any finite-variation measure from coefficients
Super-resolution meets machine learning: approximation of measures
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Unitary flagged by isolated point in its extreme-point set
Metric characterisation of unitaries in JB$^*$-algebras
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Probabilistic metric spaces metrize under continuous triangle functions
Metrization of probabilistic metric spaces. Applications to fixed point theory and Arzela-Ascoli type theorem
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New generalized fractional operators prove Cauchy problems well-posed
Generalized substantial fractional operators and well-posedness of Cauchy problem