uction of a complete gate set. However, if a certain assumption is added to their model—i.e., that the topological changes 1, σ and ε can be distinguished on a simple (framed) loop γ in space-time—then {g1,g2,g3} may be realized in 2+1 dimensions. Projecting to the charge sectors 1, σ and ε extends the discussion of Topologically-Protected Qubits from a Possible Non-Abelian Fractional Quantum Hall State, by Das Sarma, Freedman, and Nayak (“DFN”), in which interferometry was proposed to distinguish the 1 and ε changes. By an extension of DFN, an interferometry measurement should be able to resolve the identity into the sum of three projectors: 1d={circumflex over (1)}⊕{circumflex over (σ)}⊕{circumflex over (ε)}. A further generalization, however, is needed.

1. Field of the Invention
The present invention relates to electrodes for sensing signals such as electrocardiograph signals and, more particularly, this invention relates to electrode elements or conductors adapted for use in such electrodes to interconnect an electrolyte with suitable signal processing or monitoring equipment.
2. Description of the Prior Art
U.S. Pat. Nos. 3,696,807 and 3,701,346 illustrate medical electrodes which are known in the prior art and to which the present invention is applicable. In these patents an electrolyte applied to the skin of a human or other animal subject is interfaced to electrocardiograph monitoring equipment by a solid metal conductor such as silver contacted to the electrolyte. Electrodes of this type are known to function adequately to meet the needs of the medical profession but are also relatively expensive because the preferred metal for electrolyte contact is silver. Even though the amount of silver used in such electrodes is not great, the cost of the silver used in the electrode represents a significant cost factor. Aside from the cost of the raw metal, difficulties encountered in forming or shaping solid metal contribute to the cost of electrode manufacture. Because of the cost of the manu