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13 papers · 1 filter
Black hole solutions in F(R) gravity with conformal anomaly
S. H. Hendi, D. Momeni
In this paper, we consider theory instead of Einstein gravity with conformal anomaly and look for its analytical solutions. Depending on the free parameters, one may…
FRW and Bianchi type I cosmology of f-essence
Mubasher Jamil, D. Momeni, N. S. Serikbayev +1
F-essence is a generalization of the usual Dirac model with the nonstandard kinetic term. In this paper, we introduce a new model of spinor cosmology containing both Ricci scalar a…
Application of Lie algebroid structures to unification of Einstein and yang-mills field equations
Naiereh Elyasi, Nasser Boroojerdian
Yang-mills field equations describe new forces in the context of Lie groups and principle bundles. It is of interest to know if the new forces and gravitation can be described in t…
Linkage of finite Gorenstein dimension modules
Mohammad T. Dibaei, Arash Sadeghi
For a horizontally linked module, over a commutative semiperfect Noetherian ring , the connections of its invariants reduced grade, Gorenstein dimension and depth are studied. I…
On the Graded Annihilators of Right Modules Over The Frobenius Skew Polynomial Ring
Ehsan Tavanfar
Let R be a commutative Noetherian ring of prime characteristic and M be an x-divisible right R[x,f]-module that is Noetherian as R-module. We give an affirmative answer to the ques…
Affine metrics and algebroid structures: Application to general relativity and unification
N. Elyasi, N. Boroojerdian
Affine metrics and its associated algebroid bundle are developed. Theses structures are applied to the general relativity and provide an structure for unification of gravity and el…