Results 31 to 40 of about 570 (72)

On Farkas Lemma and Dimensional Rigidity of Bar Frameworks [PDF]

open access: yes, 2014
We present a new semidefinite Farkas lemma involving a side constraint on the rank. This lemma is then used to present a new proof of a recent characterization, by Connelly and Gortler, of dimensional rigidity of bar frameworks.Comment: First ...
Alfakih, A. Y.
core  

A Positivstellensatz which Preserves the Coupling Pattern of Variables

open access: yes, 2006
We specialize Schm\"udgen's Positivstellensatz and its Putinar and Jacobi and Prestel refinement, to the case of a polynomial $f\in R[X,Y]+R[Y,Z]$, positive on a compact basic semi algebraic set $K$ described by polynomials in $R[X,Y]$ and $R[Y,Z]$ only,
Lasserre, Jean B.
core   +2 more sources

LIBOR additive model calibration to swaptions markets [PDF]

open access: yes
In the current paper, we introduce a new calibration methodology for the LIBOR market model driven by LIBOR additive processes based in an inverse problem.
Francisco J. Nogales   +2 more
core  

Complete positivity and distance-avoiding sets. [PDF]

open access: yesMath Program, 2022
DeCorte E, Filho FMO, Vallentin F.
europepmc   +1 more source

Disentangling orthogonal matrices. [PDF]

open access: yesLinear Algebra Appl, 2017
Zhang T, Singer A.
europepmc   +1 more source

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