abstract: Determinant point processes (a classical example of such a process is the distribution of the eigenvalues of a Gaussian unitary ensemble of random matrices) often have an amazing property of rigidity: the number of particles within any bounded set is completely determined by the configuration outside of this set. We plan to recall how this property can be proved in determinantal case, and to show how we can generalize the proof to the Pfaffian sine and Bessel processes. Joint work with Alexander Bufetov and Yanqi Qiu.