  Topology captures the essence of what remains unchanged under a
transformation. In this study, a topological invariant called super
conformality was found to preserve a critical angle between the constitutive
plane and its second order differential plane for a two-terminal electric
element as building blocks of modern electronics. This super conformality leads
to local activity of a higher-order electric element so that the periodic table
of the electric elements can be dramatically reduced to have only 6 passive
ones, in contrast to the unbounded table predicted 40 years ago. Our claim that
all the higher-order electric elements must be active was experimentally
verified by the fact that a 2nd-order sodium memristor in the famous
Hodgkin-Huxley circuit is locally active with an internal battery.
