Bifurcation of periodic points and normal form theory in reversible diffeomorphisms
On the category of topological topologies
On the resolvents of dyadic paraproducts.
We consider the boundedness of certain singular integral operators that arose in the study of Sobolev spaces on Lipschitz curves, [P1]. The standard theory available (David and Journé's T1 Theorem, for instance; see [D]) does not apply to this case becuase the operators are not necessarily Calderón-Zygmund operators, [Ch]. One of these operators gives an explicit formula for the resolvent at λ = 1 of the dyadic paraproduct, [Ch].
Sottospazi invarianti per operatori compact friendly in spazi di Sobolev
Some results on sequentially compact extensions
The class of Hausdorff spaces (or of Tychonoff spaces) which admit a Hausdorff (respectively Tychonoff) sequentially compact extension has not been characterized. We give some new conditions, in particular, we prove that every Tychonoff locally sequentially compact space has a Tychonoff one-point sequentially compact extension. We also give some results about extension of functions and about lattice properties of the family of all minimal sequentially compact extensions of a given space.
On n-permutable equivalence relations in regular categories
L'Hospital - Bernoulli's controversy.
The L. Kronecker-G. Cantor's controversy about infinite.
Binomial coefficients' tabulation system or Pascal's triangle: A numerical model rips the loom of time.
Superconvergence of mixed finite element methods for parabolic equations
Lady Ada Byron and the first program for computers.
Omar Khayyam: Mathematics, the nothing, wine, the potter's wheel and the beloved one.
Problemi di complementazione
Three solutions for quasilinear equations in near resonance.
-permutable locally finitely presentable categories.
A second order ODE with a nonlinear final condition.
Two iterative schemes for an -system.
Monoidal closed structures for topological spaces : counter-example to a question of Booth and Tillotson
On primeness and maximality of filters
Wallman-type compaerifications and function lattices
Let be a vector sublattice over which separates points from closed sets of . The compactification obtained by embedding in a real cube via the diagonal map, is different, in general, from the Wallman compactification . In this paper, it is shown that there exists a lattice containing such that . In particular this implies that . Conditions in order to be are given. Finally we prove that, if is a compactification of such that is -dimensional, then there is an algebra such...
Page 1 Next