Dirac equation in the algebra of physical space Dirac equation in the algebra of physical space The Dirac equation, as the relativistic equation that describes spin 1/2 particles in quantum mechanics, can be written in terms of the Algebra of physical space (APS), which is a case of a Clifford algebra or geometric algebra that is based on the use of paravectors. The Dirac equation in APS, including the electromagnetic interaction, reads Another form of the Dirac equation in terms of the Space time algebra was given earlier by David Hestenes. In general, the Dirac equation in the formalism of geometric algebra has the advantage of providing a
Minimum capital must be paid up (of the nominal amount and of any premium). Minimum capital Minimum capital is a concept used in corporate law and banking regulation to stipulate what assets the organisation must hold as a minimum requirement. The purpose of minimum capital in corporate law is to ensure that in the event of insolvency or financial instability, the corporation has a sufficient equity base to satisfy the claims of creditors. All public companies within the European Union are required to hold at least €25.000 in capital, although many countries go above this minimum requirement. The requirement is e.g. £50.000