THE SOLVABLE Q-GROUPS WITH ONE CONJUGACY CLASS OF INVOLUTIONS
THE STRUCTURE OF THE GROWS ALL WHOSE SUBGROUPS ARE NORMAL
2'-R GROUPS WITH EVEN CHARACTERS
ERROR IN DEMARTRES'S PAPER AND THE CORRECT RESULT
SIMULTANEOUS APPROXIMATION BY MODIFIED BETA OPERATORS
ABOUT A CONJECTURE OF DEACONESCU
ON THE ROTATION ENTROPY FUNCTION FOR FLOWS
BOUNDED AND ALMOST PERIODICAL SOLUTIONS OF THE DIFFERENTIAL EQUATIONS OF SECOND ORDER