The fact that the coefficients of capacitance for a set of capacitors are geometrical factors appears in all textbooks of electricity and magnetism. However, in basic treatments there is no aâ€¦ (More)

We prove that the matrix of capacitance in electrostatics is a positive matrix. We explore the physical implications of this mathematical fact, and study the eigenvalue problem for the matrix ofâ€¦ (More)

Under certain conditions usually fulfilled in classical mechanics, the principle of conservation of linear momentum and the Newtonâ€™s third law are equivalent. However, the demonstration of such factâ€¦ (More)

Through the solution of the Bogoliubov de Gennes equations we analyze the effect of different symmetries of the pair potential on the quasiparticle energy spectrum in SNINS junctions (S:â€¦ (More)

We develope several powerful methods to calculate moments of inertia for certain kind of objects such as thin plates, solids of revolution, solids generated by contourplots, etc, by using theâ€¦ (More)

Interface bound states have been theoretically predicted to appear at isolated graphene-superconductor junctions. These states are formed at the interface due to the interplay between virtual Andreevâ€¦ (More)

It is usual in introductory courses of mechanics to develop the work and energy formalism from Newtonâ€™s laws. On the other hand, literature analyzes the way in which forces transform under a changeâ€¦ (More)

We prove that the matrix of capacitance in electrostatics is a positive matrix. We explore the physical implications of this mathematical fact, and study the eigenvalue problem for the matrix ofâ€¦ (More)

It is commonly stated in Newtonian Mechanics that the torque with respect to the laboratory frame is equal to the torque with respect to the center of mass frame plus an RÃ—F factor, withR being theâ€¦ (More)