This is the first of two papers devoted to asymptotic structure space-time in presence a non-negative cosmological constant $\Lambda$. paper concerned with case $\Lambda =0$. Our approach fully based on tidal nature gravitational field and therefore `tidal energies' built Weyl curvature. In particular, we use (radiant) supermomenta computed from rescaled tensor at infinity provide novel charact...

the electronic structure, energy band structure and electronic density of 2 sno ceramic in cubicphase have been investigated using first principle full potential-linearized augmented plane wave (fp-lapw)method within density functional theory (dft). local density approximation (lda) and the generalizedgradient approximation (gga), which are based on exchange- correlation energy optimization wer...