Results 91 to 100 of about 2,801,507 (197)

Quadratic solutions of quadratic forms

open access: yes, 2016
We study solutions of a homogeneous quadratic equation $q(x_0,\dots, x_n)=0$, defined over a field $K$, where the $x_i$ are themselves homogeneous polynomials of some degree $d$ in $r+1$ variables. Equivalently, we are looking at rational maps from projective $r$-space $P^r$ to a quadric hypersurface $Q$, defined over a field $K$. The space of maps of $
openaire   +2 more sources

Quadratic forms.

open access: yesJournal of the Mathematical Society of Japan, 1953
openaire   +3 more sources

Quadratic Forms

open access: yes, 1959
This paper shall be mostly concerned with the development and the properties of three quadratic polynomials.
Cadenhead, Clarence Tandy
core  

Testing for Multivariate Equivalence with Random Quadratic Forms [PDF]

open access: yes
Multivariate equivalence testing becomes necessary whenever the similarity rather than a difference between several treatment groups with multiple endpoints has to be shown.
Weißbach, Rafael
core  

Multivariate Nonnegative Quadratic Mappings [PDF]

open access: yes
In this paper we study several issues related to the characterization of speci c classes of multivariate quadratic mappings that are nonnegative over a given domain, with nonnegativity de ned by a pre-speci ed conic order.In particular, we consider the ...
Zhang, S., Sturm, J.F., Luo, Z-Q
core  

Lyapunov Stability Analysis of Higher Order 2D Systems

open access: yes
We prove a necessary and sufficient condition for the asymptotic stability of a 2D system described by a system of higher-order linear partial difference equations.
Kojima, Chiaki   +2 more
core   +1 more source

Immunizing Conic Quadratic Optimization Problems Against Implementation Errors [PDF]

open access: yes
We show that the robust counterpart of a convex quadratic constraint with ellipsoidal implementation error is equivalent to a system of conic quadratic constraints.
Ben-Tal, A., Hertog, D. den
core  

Supercongruences involving Domb numbers and binary quadratic forms. [PDF]

open access: yesRev R Acad Cienc Exactas Fis Nat A Mat
Mao GS, Schlosser MJ.
europepmc   +1 more source

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