Instanton vacuum beyond chiral limit
  In this talk it is discussed the derivation of low-frequencies part of quark determinant and partition function. As a first application, quark condensate is calculated beyond chiral limit with the account of O(m), O(1/N_c), O(1/N_c m) and O(1/N_c m ln m) corrections. It is demonstrated complete correspondence of the results to chiral perturbation theory. 
M. Musakhanov (Pusan National University and Uzbekistan National   University)