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In this paper, we study the solvability and nonsolvability of a singular nonlinear system of partial differential equations which appear in the normal form theory of vector fields. It

Levitan , On the asymptotic behavior of the spectral function of a self-adjoint second order differential equation, Amer.. 101

Since each convexity ideal in question is σ -generated by closed sets, and there are exactly continuum many closed subsets of any perfect Polish space, each of these ideals

These counting problems provide a beautiful hierarchy of relationships between topological string theory/gauge theory in six dimensions, four-dimensional supersymmetric gauge

2.1. A local solution of the blowup system.. in this strip. Straightening out of a characteristic surface. Reduction to an equation on φ.. are known functions. Construction of

Joshi; Existence and nonexistence of solutions of sublinear problems with prescribed num- ber of zeros on exterior domains, Electronic Journal of Differential Equations, 2017 No..

Abstract We give a summary of known results on the maximal distances between Dehn fillings on a hyperbolic 3–manifold that yield 3–manifolds containing a surface of non-negative

If the category P (C) of small presheaves on C is finitely complete, then its K-canonical topology is K-ary and induces the trivial K-ary topology on C, while every small presheaf