Algebraic elements in the transformation theory of 2nd order linear oscillatory differential equations
Periodic solutions of nonlinear partial differential equations of evolution
Axiomatization of differential equation theory
Condition number estimates for elliptic difference problems with anisotropy
Algebraic methods in the theory of global properties of the oscillatory equations
Transformation of ordinary second-order linear diferential equations
On the numerical solution of nonlinear partial differential equations on divergence form
Nonlinear boundary-value problems for differential equations
On the iterative solution of finite element systems of equations
Hopf structures on the Borel subalgebra of
Les corps algébriques et la théorie des idéaux
Uniform continuity in paracompact spaces
On the linear and quasilinear parabolic equations
Integral representation of functions and imbedding theorems for domains with the flexible Horn property [Summary]
On formulation and solvability of boundary value problems for viscous incompressible fluids in domains with non-compact boundaries
On certain quantities in Fredholm operator theory and Mil'man's isometry spectrum
Energetic estimates analogous to the Saint-Venant principle and their applications
Rechenbuch für den ersten Unterricht
New boson realizations of quantum groups
On the regularity and non-regularity of elliptic and parabolic systems
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