Calculation of the weak interactions in dysprosium

P-odd and P,T-odd transition amplitudes for the two almost degenerate levels of opposite parity with J=10 and E=19 797.96 ${\mathrm{cm}}^{\mathrm{-}1}$ are calculated. Our result for the P-odd amplitude of the interaction with the weak charge of the nucleus is (70±40)(-i) Hz. The P,T-odd amplitude caused by the electric dipole moment of the electron ${\mathit{d}}_{\mathit{e}}$ is (1.2±0.5)×${10}^{23}$ Hz/(e cm). We also calculated g factors and hyperfine constants A and B for several levels. These results are in good agreement with experiment. The calculated lifetime of 6 μsec for the positive parity level is reasonably close to 8 μsec measured by D. Budker et al. [Phys. Rev. Lett. 70, 3019 (1993)].