摘要: The action of supersymmetric Born-Infeld theory (D-9-brane in a Lorentz covariant static gauge) has geometric form the Volkov-Akulov-type. first non-linearly realized supersymmetry can be made manifest, second world-volume is not manifest. We also study analogous 2 supersymmetries quadratic covariantly quantized D-0-brane. show that Hamiltonian and BRST operator are build from these two generators.