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Means and Concave Products of Positive Semi-Definite Matrices.
Mathematische Annalen, Tome 264 (1983), pp. 119-128 Cet article a éte moissonné depuis la source European Digital Mathematics Library

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Mots-clés : binary operation for positive semi-definite matrices, harmonic mean, super additive, connection in the sense of Kubo and Ando, concavity, concave products of positive semi-definite matrices 
@article{MAN_1983__264_163774,
     author = {Frank Hansen},
     title = {Means and {Concave} {Products} of {Positive} {Semi-Definite} {Matrices.}},
     journal = {Mathematische Annalen},
     pages = {119--128},
     year = {1983},
     volume = {264},
     zbl = {0495.47021},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__264_163774/}
}
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AU  - Frank Hansen
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JO  - Mathematische Annalen
PY  - 1983
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EP  - 128
VL  - 264
UR  - http://geodesic.mathdoc.fr/item/MAN_1983__264_163774/
ID  - MAN_1983__264_163774
ER  - 
%0 Journal Article
%A Frank Hansen
%T Means and Concave Products of Positive Semi-Definite Matrices.
%J Mathematische Annalen
%D 1983
%P 119-128
%V 264
%U http://geodesic.mathdoc.fr/item/MAN_1983__264_163774/
%F MAN_1983__264_163774
Frank Hansen. Means and Concave Products of Positive Semi-Definite Matrices.. Mathematische Annalen, Tome 264 (1983), pp. 119-128. http://geodesic.mathdoc.fr/item/MAN_1983__264_163774/