Sever Popa

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  • A Ioana, J Peterson, S Popa
  • 2005
We consider amalgamated free product II 1 factors M = M 1 * B M 2 * B ... and use " deformation/rigidity " and " intertwining " techniques to prove that any relatively rigid von Neumann subalgebra Q ⊂ M can be intertwined into one of the M i 's. We apply this to the case M i are w-rigid II 1 factors, with B equal to either C, to a Cartan subalgebra A in
The performances of unipolar and bipolar depressive patients and also of a control group on motor, verbal and mental components of psychomotor functioning were clinically and psychometrically evaluated and compared at a univariate and multivariate level. The groups were similar with respect to age, sex, educational level, illness onset age and depression(More)
  • Michael Frank, Eberhard Kirchberg, S Popa, M Baillet, Y Denizeau, J.-F Havet +1 other
  • 1998
For a conditional expectation E on a (unital) C*-algebra A there exists a real number K ≥ 1 such that the mapping K · E − id A is positive if and only if there exists a real number L ≥ 1 such that the mapping L · E − id A is completely positive, among other equivalent conditions. The estimate (min K) ≤ (min L) ≤ (min K)[min K] is valid, where [·] denotes(More)
BACKGROUND AND AIM This review aims at presenting a current view on the most frequent factors involved in the mechanisms causing temporomandibular disorders (TMD). METHOD We conducted a critical review of the literature for the period January 2000 to December 2014 to identify factors related to TMD development and persistence. RESULTS The etiology of(More)
Based on some mathematical and statistical approaches, our study leads to some conclusions concerning the procedures related to the orodental prosthetics. Occlusal equilibration in orodental prosthetics is a major issue because besides motivating patients for a regular daily oral hygiene, it could significantly increase the longevity of FPR. More dental(More)
Deceased cases with cerebral infarction and hemorrhage constituted the subjects of the present study. They were divided into two groups: 127 cases in group 1 (1954-1959) and 427 cases in group 2 (1977-1982). The purpose of the study was to compare clinical data to evidence any statistical difference between groups. No statistically significant difference(More)
Personality traits of 46 psychotic depressive patients (PD) were compared with those of two matched control groups of nonpsychotic endogenous (NPED) and nonpsychotic nonendogenous (NPNED) depressive patients. Discriminant analyses using personality variables point to more marked differences between PD and NPNED patients than between PD and NPED ones. PD and(More)
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