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Ordinary Differential Equations and Operators [1983]

1
Inversion in the unit sphere for powers of the Laplacian
9
Nonlinear second order boundary value problems: An existence-uniqueness theorem of S. N. Bernstein
17
A definiteness result for determinantal operators
31
On second-order left-definite boundary value problems
68
A von Neumann factorization of some selfadjoint extensions of positive symmetric differential operators and its application to inequalities
93
Inclusion theorems for solutions of differential equations with aid of pointwise or vector monotonicity
110
The liouville-green asymptotic theory for second-order differential equations: A new approach and some extensions
123
Non-self-adjoint operators and their essential spectra
161
A concept of adjointness and symmetry of differential expressions based on the generalised Lagrange identity and Green's formula
170
On quadratic integral inequalities associated with second-order symmetric differential expressions
224
Nonoscillation theorems for differential equations with general deviating arguments
240
Self-adjoint 4-th order boundary value problem in the limit - 4 case
257
Factorization and the Friedrichs extension for ordinary differential operators
267
Eigenvalue problems and the Riemann zeta function II
298
Boundedness criteria for hyperbolic characteristic initial value problems
311
Matrix riccati inequality and oscillation of second order differential systems
328
A new approach to second order linear oscillation theory
346
Small amplitude limit cycles of polynomial differential equations
358
Regular growth and zero-tending solutions
375
Asymptotic distribution of the eigenvalues of non-definite Sturm-Liouville problems
384
Some remarks on the order of an entire function associated with a second order differential equation
390
Steepest descent for general systems of linear differential equations in Hilbert space
407
On the spectral theory of some nonsymmetric second order differential operators
427
The Cauchy and backward-Cauchy problem for a nonlinearly hyperelastic/viscoelastic infinite rod
449
Floquet theory for doubly-periodic differential equations and a number theory conjecture
502
Poincaré's type of equations in the study of limit cycles
509
Das Gesetz von Maxwell-Clausius in der phaenomenologischen Thermodynamik
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