Search Results - "Extremera, J."

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  1. 1

    Strongly zero product determined Banach algebras by Alaminos, J., Extremera, J., Godoy, M.L.C., Villena, A.R.

    Published in Linear algebra and its applications (01-12-2021)
    “…C⁎-algebras, group algebras, and the algebra A(X) of approximable operators on a Banach space X having the bounded approximation property are known to be zero…”
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    ZERO JORDAN PRODUCT DETERMINED BANACH ALGEBRAS by ALAMINOS, J., BREŠAR, M., EXTREMERA, J., VILLENA, A. R.

    “…A Banach algebra $A$ is said to be a zero Jordan product determined Banach algebra if, for every Banach space $X$ , every bilinear map…”
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  3. 3

    Zero product preserving maps on Banach algebras of Lipschitz functions by Alaminos, J., Extremera, J., Villena, A.R.

    “…Let ( K , d ) be a non-empty, compact metric space and α ∈ ] 0 , 1 [ . Let A be either lip α ( K ) or Lip α ( K ) and let B be a commutative unital Banach…”
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  4. 4

    On bilinear maps determined by rank one idempotents by Alaminos, J., Brešar, M., Extremera, J., Villena, A.R.

    Published in Linear algebra and its applications (15-01-2010)
    “…Let M n , n ⩾ 2 , be the algebra of all n × n matrices over a field F of characteristic not 2 , and let Φ be a bilinear map from M n × M n into an arbitrary…”
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    Metric versions of Herstein's theorems on Jordan maps by Alaminos, J., Extremera, J., Villena, A.R.

    Published in Linear & multilinear algebra (01-08-2012)
    “…Let A be a Banach algebra and let B be an ultraprime Banach algebra. If Φ: A → B is a surjective continuous linear map which tends to satisfy the Jordan…”
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    Applications of Kazhdan's property ( T ) to automatic continuity by Alaminos, J., Extremera, J., Villena, A.R.

    “…Let G be a compact group which has the strong Kazhdan's property ( T ) and let τ be an isometric representation of G on L p ( μ ) for some measure space ( Ω ,…”
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    SEMISIMPLE BANACH ALGEBRAS GENERATED BY STRONGLY CONTINUOUS REPRESENTATIONS OF MOORE GROUPS by Alaminos, J., Extremera, J., Villena, A. R.

    Published in Quarterly journal of mathematics (01-06-2008)
    “…We prove that if τ is a strongly continuous bounded representation of a Moore group G on a Banach space X, and if the Arveson spectrum of τ is scattered, then…”
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  9. 9

    Hyperreflexivity of the space of module homomorphisms between non-commutative Lp-spaces by Alaminos, J., Extremera, J., Godoy, M.L.C., Villena, A.R.

    “…Let M be a von Neumann algebra, and let 0<p,q≤∞. Then the space HomM(Lp(M),Lq(M)) of all right M-module homomorphisms from Lp(M) to Lq(M) is a reflexive…”
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    Isometric Jordan Isomorphisms of Group Algebras by Alaminos, J., Extremera, J., Godoy, C., Villena, A. R.

    Published in Resultate der Mathematik (01-08-2024)
    “…Let G and H be locally compact groups. We will show that each contractive Jordan isomorphism Φ : L 1 ( G ) → L 1 ( H ) is either an isometric isomorphism or an…”
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    Fast segregation of thermal response functions in short-term for vertical ground heat exchangers by Extremera-Jiménez, Alejandro J., Yousif, Charles, Casanova-Peláez, Pedro J., Cruz-Peragón, Fernando

    Published in Applied thermal engineering (01-06-2024)
    “…•Practical segregation procedure to determine the g-function and borehole resistance.•It models the short-term of the ground heat exchanger behavior…”
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  14. 14

    Vertical ground heat exchanger parameter characterization through a compound design of experiments by Extremera-Jiménez, Alejandro J., Gutiérrez-Montes, Cándido, Casanova-Peláez, Pedro J., Cruz-Peragón, Fernando

    Published in Renewable energy (01-11-2022)
    “…Vertical ground heat exchangers (VGHE) are the most extended elements in geothermal utilization systems. For design and optimization purposes, the precise…”
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  15. 15

    Separating ideals in group algebras by Extremera, J., Villena, A. R.

    Published in Quarterly journal of mathematics (01-09-2004)
    “…Let G be a non‐compact locally compact group and let A be a unital Banach algebra. We show that the only separating ideal in L1(G,A) is {0}. This entails that…”
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    Orthogonally additive polynomials on Fourier algebras by Alaminos, J., Extremera, J., Villena, A.R.

    “…We show that an n-homogeneous polynomial P on the Fourier algebra A(G) of a locally compact group G can be represented in the form P(f)=〈T,fn〉(f∈A(G)) for some…”
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    Spectral preservers and approximate spectral preservers on operator algebras by Alaminos, J., Extremera, J., Villena, A.R.

    Published in Linear algebra and its applications (01-05-2016)
    “…Let A and B be unital primitive Banach algebras with minimal idempotents. We prove that every surjective spectral isometry from A onto B is of the form λΨ…”
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    Approximately zero-product-preserving maps by Alaminos, J., Extremera, J., Villena, A. R.

    Published in Israel journal of mathematics (01-09-2010)
    “…A continuous linear map T from a Banach algebra A into another B approximately preserves the zero products if ‖ T ( a ) T ( b )‖ ≤ α‖ a ‖‖ b ‖ ( a,b ∈ A, ab =…”
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    Approximately spectrum-preserving maps by Alaminos, J., Extremera, J., Villena, A.R.

    Published in Journal of functional analysis (01-07-2011)
    “…Let X and Y be superreflexive complex Banach spaces and let B ( X ) and B ( Y ) be the Banach algebras of all bounded linear operators on X and Y,…”
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