@article{MAKHILLRJAS201914210159,
    title = {Hyperbolic Center of Mass for a System of Particles on the Poincare
Upper Half-Plane},
    journal = {Research Journal of Applied Sciences},
    volume = {14},
    number = {2},
    pages = {49-53},
    year = {2019},
    issn = {1815-932x},
    doi = {rjasci.2019.49.53},
    url = {https://makhillpublications.co/view-article.php?issn=1815-932x&doi=rjasci.2019.49.53},
    author = {P. Ortega,Ruben Dario and},
    keywords = {The poincare upper half-plane model,hyperbolic center of mass,hyperbolic lever rule,Geodesic,particles,superior},
    abstract = {In the present study, we obtain using the lever law of the lever, an explicit formula that allows to
calculate the center of mass of a system of n-particles with masses m<sub>1</sub>, m<sub>2</sub>, ..., m<sub>n</sub>>0, located on the half plane
superior of Lobachevsky H<sup>2</sup>, endowed with a conforming metric which induces constant and negative Gaussian
curvature.}
    }