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- Institute for Research in Fundamental SciencesIR3 papers
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5 papers · 1 filter
Generalization of Some Algebras in the Bosonic String Theory
Seyed Sina ShahidZadeh Mousavi
We assume that the total target phase space is non-commutative. This leads to the generalization of the oscillator-algebra of the string, and the corresponding Virasoso algebra. Th…
Consecutive cancellations in Betti numbers of local rings
Maria Evelina Rossi, Leila Sharifan
Let I be a homogeneous ideal in a polynomial ring P over a field. By Macaulay's Theorem, there exists a lexicographic ideal L=Lex(I) with the same Hilbert function as I. Peeva has…
Rock Joint Surfaces Measurement and Analysis of Aperture Distribution under Different Normal and Shear Loading Using GIS
Mostafa Sharifzadeh, Yasuhiro Mitani, Tetsuro Esaki
Geometry of the rock joint is a governing factor for joint mechanical and hydraulic behavior. A new method of evaluating aperture distribution based on measurement of joint surface…
Capacity on Finsler Spaces
B. Bidabad, S. Hedayatian
Here, the concept of electric capacity on Finsler spaces is introduced and the fundamental conformal invariant property is proved, i.e. the capacity of a compact set on a connected…
One-loop approximation of Moller scattering in Krein-space quantization
F. Payandeh, M. Mehrafarin, M. V. Takook
It has been shown that the negative-norm states necessarily appear in a covariant quantization of the free minimally coupled scalar field in de Sitter spacetime [1,2]. In this proc…