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Contents

Inequalities for norms of derivatives in weighted 𝐿_{𝑝} spaces

Some criteria for the completeness of a system of root vectors of a linear operator in a Banach space

Plus-operators in a space with indefinite metric

ℑ-polar representation of plus-operators

On the theory of linear operators in spaces with two norms

Unitary representations of the Lorentz group in a space with indefinite metric

Infinitesimal bendings of convex surfaces with bush constraints

Almost-reducible and symmetric almost-reducible affinely connected spaces

Affinely connected spaces admitting a transitive group of motions with a completely reducible stationary linear subgroup

The geometry of nested families with empty intersection. structure of the unit sphere of a nonreflexive space

Geometry of the Möbius strip and differential equations

On an integral connected with symmetric Riemann spaces of nonpositive curvature

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