18 citations · 47 across the 18 of their papers we have counts for
4 papers · 1 filter
A Note on Eye Movement
Oscar Bolina, L. H. A. Monteiro
In a simplified fashion, the motion of the eyeball in its orbit consists of rotations around a fixed point. Therefore, this motion can be described in terms of the Euler's angles o…
Finite Rotations
Oscar Bolina, J. A. da Silva Neto
We present an elementary discussion of two basic properties of angular displacements, namely, the anticommutation of finite rotations and the commutation of infinitesimal rotations…
A Cluster Expansion for Dipole Gases
Oscar Bolina, J. R. Parreira
We give a new proof of the well-known upper bound on the correlation function of a gas of non-overlapping dipoles of fixed length and discrete orientation working directly in the c…
The Falicov-Kimball Model with Long--Range Hopping Matrices
Oscar Bolina, Domingos H. U. Marchetti
The ground state nature of the Falicov-Kimball model with unconstrained hopping of electrons is investigated. We solve the eigenvalue problem in a pedagogical manner and give a com…