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Nonnegativity of quadratic forms on intersections of quadrics and quadratic mapsThe question of the nonnegativity of quadratic forms on intersections of quadratic cones

On two questions of optimization theory concerning quadratic mappings of quadratic forms. The second problem deals with the positivity of the maximum of finitely many of quadratic

Two problems of the theory of quadratic mapsGiven quadratic forms q 1,..., q k, two questions are studied: Under what conditions does the set

Differential properties of the minimum function for diagonalizable quadratic problems the quadratic forms appearing in the statement of the problem are determined by simultaneously diagonalizable

Goldbach's ternary problem involving prime numbers expressible by given quadratic forms positive definite binary quadratic forms whose discriminants coincide with the discriminants of imaginary

Properties of the minimum function in the quadratic problemPerturbations of the quadratic form minimization problem under quadratic constraints of the type

Positive quadratic forms on intersections of quadricsThe positive definiteness of a quadratic form on the cone defined as the set of points at which

Properties of surjective real quadratic maps map is obtained. A canonical form of surjective quadratic maps from ℝ3 to ℝ3 is constructed. © 2016

On real quadratic forms annihilating an intersection of quadricsOn real quadratic forms annihilating an intersection of quadrics

DEGENERATED QUADRATIC-FORMS IN THE CALCULUS OF VARIATIONSDEGENERATED QUADRATIC-FORMS IN THE CALCULUS OF VARIATIONS

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