L. JAY OLIVA, a scholar of Russian history who lives with his wife in a student dormitory at New York University, has been named the next president of NYU . . . DENMARK'S 4 million eligible voters went to the polls Wednesday in extraordinary general elections called following last month's breakdown in negotiations on a national finance package. At stake in the 13-party elections were the 179 seats of the unicameral Folketing, or parliament, in which a total of eight parties were represented up to Wednesday . . . THE INTERNATIONAL MONETARY FUND is cutting its loan interest rate in a move that could save debtor countries about $100 million a year, sources say. At the end of October the fund had about $30 billion worth of loans outstanding. Mexico, Argentina, Brazil and Venezuela are the biggest debtors among 78 borrowing countries.