This paper is concerned with approximation properties of orthonormal mapped Chebyshev functions (OMCFs) in unbounded domains. Unlike the usual mapped Chebyshev functions which are associated with weighted Sobolev spaces, the OMCFs are associated with the usual (non-weighted) Sobolev spaces. This leads to particularly simple stiffness and mass matrices for higher-dimensional problems. The approx...

The "curved" super Grassmannian is the supervariety of subsupervarieties purely odd dimension $k$ in a~supervariety $n$, unlike "usual" which linear subsuperspacies a~superspace $n$. Lie superalgebras all and Hamiltonian vector fields on superpoint are realized as derivations structure sheaves certain Grassmannians,

nowadays, combination of gps heights with orthometric heights, derived from precise leveling, is broadly used to obtain point-wise solutions of the geoid, which is called “gps/leveling geoid”. the “gps/leveling geoid” is commonly used to constrain the gravimetric geoid solutions in a least squares surface fitting process. in this paper, unlike the usual application, the “gps/leveling geoid” is ...

Abstract It is proved that all sufficiently large integers n can be represented as n = x 1 2 + 3 ⋯ 13 14 , n=x_{1}^{2}+x_{2}^...