TY JOUR TI REDUCE THE NUMBER OF UNNECESSARY TRANSITIONS AND STATES IN THE PUSHDOWN RECOGNIZER KW context-free language KW pushdown recognizer KW state KW transition KW equivalent transforming. JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Ryazanov, Y.D. PY 2016 IS 1 PB Belgorod State Technological University named after V.G. Shukhov