Quelques problèmes concernant le mouvement des fluides visqueux
On the embedding of ordered semigroups into ordered group
It was shown in [7] that any right reversible, cancellative ordered semigroup can be embedded into an ordered group and as a consequence, it was shown that a commutative ordered semigroup can be embedded into an ordered group if and only if it is cancellative. In this paper we introduce the concept of -maher and -maher semigroups and use a technique similar to that used in [7] to show that any left reversible cancellative ordered or -maher semigroup can be embedded into an ordered group.
Parabolic Marcinkiewicz integrals on product spaces and extrapolation
In this paper, we study the the parabolic Marcinkiewicz integral [...] MΩ,hρ1,ρ2 on product domains Rn × Rm (n, m ≥ 2). Lp estimates of such operators are obtained under weak conditions on the kernels. These estimates allow us to use an extrapolation argument to obtain some new and improved results on parabolic Marcinkiewicz integral operators.
Bifurcations of the time-fractional generalized coupled Hirota-Satsuma KdV system
The Hirota-Satsuma model with fractional derivative is considered to provide some characteristics of memory embedded into the system. The modified system is analyzed analytically using a new technique called residual power series method. We observe thatwhen the value of memory index (time-fractional order) is close to zero, the solutions bifurcate and produce a wave-like pattern.
General numerical radius inequalities for matrices of operators
On projection constant problems and the existence of metric projections in normed spaces.
On the projection constants of some topological spaces and some applications.
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