July 2, 1983

Foreign Minister Yitzhak Shamir said today that Israel had not abandoned its determination to see simultaneous Syrian and Israeli withdrawals from Lebanon. Speaking on the Israeli television, Mr. Shamir said there had been some discussion among Reagan Administration officials ''on certain changes in the timetable of withdrawals.'' He added: ''We reject all changes like this. We think there is nothing to be gained from this. We think all sides must be faithful to the principle of simultaneous withdrawal. Furthermore, there was no discussion of changing this principle.''

The Supreme Court vindicated Raymond L. Dirks today, ruling that the securities analyst did not misuse inside information in warning several clients that the Equity Funding Corporation was about to collapse. The Court's 6-to-3 ruling went well beyond the Dirks case. It set significant new limits on the legal liability of those who make use of nonpublic information they receive from a corporate insider, usually an officer, director or major stockholder. In a strongly worded opinion today, Associate Justice Lewis F. Powell Jr. said not only that the Securities and Exchange Commission was wrong to censure Mr. Dirks but also that the commission had taken an unduly rigid view of the law on insider trading.

The Federal Bureau of Investigation said today that its inquiry into the 1980 Presidential campaign would probably require interviews with leading Reagan Administration officials. These officials include William J. Casey, Director of Central Intelligence, and James A. Baker 3d, chief of staff at the White House. As the investigation of alleged campaign abuses began to focus on the differing recollections of these two Reagan advisers, the Administration was suffering a separate, growing problem of internal friction centered on the same two principals. Staff speculation increased about possible resignations or dismissals, and partisans of Mr. Baker and Mr. Casey privately criticized one another over the 1980 incident in which Reagan aides obtained and used papers outlining President Carter's strategy for meeting Ronald Reagan in their showdown debate on national television.

R. Buckminster Fuller, the forward-looking inventor best known as the father of the geodesic dome, died of a heart attack yesterday while visiting his wife at the Good Samaritan Hospital in Los Angeles. He was 87 years old. As he put it himself, with his customary cheerful immodesty, Mr. Fuller was an ''an engineer, inventor, mathematician, architect, cartographer, philosopher, poet, cosmogonist, comprehensive designer and choreographer.'' He also was a throughgoing original, who for many years was dismissed as something of a crackpot. But by the 1950's, having stubbornly refused to abandon his beliefs that through technology ''man can do anything he needs to do'' and that ''man can create miracles,'' he had attracted a cultlike following.

Ten months after four Millburn (N.J.) High School students took Scholastic Aptitude Tests required for college entrance, a form letter from the Educational Testing Service of Princeton, N.J., arrived in the mail for each of them. ''In reviewing your scores,'' it said, the testing service's board of review ''found close agreement of your answers with those on another answer sheet from the same test center. Such agreement is unusual and suggests that copying occurred.'' In two weeks, the letter said, the scores would be canceled and the students' prospective colleges notified, unless they could give ''additional information'' to prove they had not cheated. It also gave them the options of taking new tests, appealing to impartial arbitrators or canceling their scores voluntarily.