Local R-observability of Differential-algebraic Equations that ensure
the
existence of a global structural form that separates "algebraic" and "differential
Kantorovich's Fixed Point Theorem in Metric Spaces and Coincidence PointsExistence and
uniqueness theorems are obtained for a fixed point of a mapping of a complete metric
Inner uniqueness theorem for second order linear elliptic equation with constant coefficientsInner
uniqueness theorem for second order linear elliptic equation with constant coefficients
One Proof of the Fundamental Theorem of Algebra (of Polynomials)One proof of the fundamental
theorem of algebra (of polynomials) is given, based on the
theorem Products in categories of fractions and universal inversion of homomorphisms these products. Using this
theorem analogues of the theory of matrix
localization of rings are constructed
A note on the delay nonlinear parabolic differential equations to nonlinear delay parabolic equations is provided.
Theorems on the
existence and
uniqueness of a bounded