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    ON THE STABILITY PROBLEM FOR THE formula FREE RIGID BODY

    In the general case of the formula free rigid body, we will give a list of integrals of motion, which generate the set of Mishchenko's integrals. In the case of formula, we prove that there are 15 coordinate-type Cartan subalgebras which on a regular adjoint orbit give 15 Weyl group orbits of equilibria. These coordinate-type Cartan subalgebras are the analogs of the three axes of equilibria for the classical rigid body on formula. The nonlinear stability and instability of these equilibria is analyzed. In addition to these equilibria there are 10 other continuous families of equilibria.