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  • Open Access Icon
  • Research Article
  • 10.7153/oam-2025-19-18
New properties of semipositive matrices and polyhedral cones
  • Jan 1, 2025
  • Operators and Matrices
  • Aritra Narayan Hisabia + 1 more

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  • Research Article
  • 10.7153/oam-2025-19-23
Properties of integral operators on Bergman-Morrey spaces
  • Jan 1, 2025
  • Operators and Matrices
  • Ruishen Qian + 1 more

For 0 < q < and 0 < < , the tent space T q, () consists of all -measurable functions f such thatIn this note, we study the boundedness and compactness of the inclusion mapping i from Bergman-Morrey Spaces A p, to Tent Spaces T q, (

  • Open Access Icon
  • Research Article
  • 10.7153/oam-2025-19-30
Maps preserving the local spectrum of generalized product of operators
  • Jan 1, 2025
  • Operators and Matrices
  • Lili Yang

Let X and Y be two infinite dimensional Banach spaces and B(X ) (resp.B(Y ) ) be the algebra of bounded linear operators on X (resp.Y ).For T B(X ) and x X , T (x) denotes the local spectrum of T at x .Fix an integer k 2 , and let A 1 * A 2 * ... * A k stand for a generalized product of any k operators A 1 , A 2 , ... , A k B(X ) .Given two nonzero vectors x 0 X and y 0 Y , in this paper, we characterize all surjective maps : B(X ) B(Y ) which satisfy A 1 * A 2 * ... * A k (x 0 ) = (A 1 )

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  • Research Article
  • 10.7153/oam-2025-19-11
The properties of the product of two orthogonal projections
  • Jan 1, 2025
  • Operators and Matrices
  • Lulu Zhang + 1 more

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  • Research Article
  • 10.7153/oam-2025-19-20
Compact weighted composition-differentiation operators of order n on the Hardy space
  • Jan 1, 2025
  • Operators and Matrices
  • Mahsa Fatehi + 1 more

The weighted composition-differentiation operator of order n is denoted by D ,,n .In this paper, we investigate some basic properties of compact weighted composition-differentiation operators of order n on the Hardy space.Moreover, we obtain the upper estimate on the norm of the operator D ,,n , in the case that < 1 .

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  • Research Article
  • Cite Count Icon 1
  • 10.7153/oam-2025-19-06
Operator radii of commuting products
  • Jan 1, 2025
  • Operators and Matrices
  • Amit Kumar + 2 more

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  • Research Article
  • 10.7153/oam-2025-19-13
Alternative criteria for boundedness of one class of matrix operators in weighted spaces of sequences
  • Jan 1, 2025
  • Operators and Matrices
  • A A Kalybay + 1 more

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  • Research Article
  • 10.7153/oam-2025-19-31
Solvability of the Sylvester tensor equation
  • Jan 1, 2025
  • Operators and Matrices
  • Li Liang

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  • Research Article
  • 10.7153/oam-2025-19-03
A generalization of the weighted algebraic numerical radius on C*-algebras
  • Jan 1, 2025
  • Operators and Matrices
  • Fugen Gao + 1 more

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  • Research Article
  • 10.7153/oam-2025-19-01
Sharp generalized uncertainty principles via factorizations
  • Jan 1, 2025
  • Operators and Matrices
  • Steven Kendell + 4 more