Academic Experience

1963-1965
Teaching Assistant, Hebrew University, Jerusalem, Israel.
1964-1966
Mathematician, Israel Air Force.
1965-1966
Instructor, Tel-Aviv University, Israel.
1966-1967
Lecturer, Tel-Aviv University, Israel.
1967-1969
Visiting Assistant Professor, University of Illinois at Champaign-Urbana - Fulbright scholar.
1969-1970
Visiting Associate Professor, University of Illinois at Champaign-Urbana, IL.
1970-1972
Senior Lecturer, Tel-Aviv University, Israel.
1972-1976
Associate Professor, Tel-Aviv University, Israel.
1972-1974
Head Department of Mathematics, Tel-Aviv University, Israel.
Fall 1973
Research Associate, York University, Toronto, Canada.
1974-1975
Visiting Professor, University of New South Wales, Australia.
1976-to date
Professor, Tel-Aviv University, Israel.
1976-1980
Dean of Faculty of Exact Sciences, Tel-Aviv University, Israel.
Summer 1978
Visiting Scholar, Universität Stuttgart, Germany - DAAD grant.
Fall 1979
Visiting Professor, University of California, Riverside CA.
1980-1981
Visiting Professor, California Institute of Technology, Pasadena CA.
1981-1982
Visiting Professor, University of Connecticut, Storrs CT.
1982-1985
Head, School of Mathematics, Tel-Aviv University.
Summer 1983
Visiting Scholar, Universität Würzburg Germany - DAAD grant.
1984-to date
Incumbent, Dr. Irene Halmos Chair in Approximation Theory.
Summer 1985
Visiting Scholar, Universitá di Firenze, Italy.
1985-1986
Visiting Professor, University of Texas at Austin TX.
Summer 1987
Visiting Scholar, University of Alberta, Edmonton AB, Canada.
Summer 1988
Visiting Scholar, Universidade Campinas, SP Brazil - FAPESP grant.
1991-
Editor Journal of Approximation Theory.
Summer 1991
Visiting Scholar, University of Alberta, Edmonton AB, Canada.
Fall 1991
Visiting Professor, University of California at Riverside CA.
Winter 1992
Visiting Professor, University of South Carolina, Columbia SC.
Summer 1992
Visiting Scholar, University of the Witwatersrand, Johannesburg, South Africa.
Summer 1993
Visiting Scholar, INSA, Rennes, France.
1995-1996
Visiting Research Professor, University of South Carolina, Columbia SC.
Summer 1998
Visiting Scholar, University of Alberta, Edmonton AB, Canada.
Fall 2000
Visiting Research Professor, University of South Carolina, Columbia SC.
Summer 2001
Visiting Scholar, University of Alberta, Edmonton AB, Canada.
2005-2010
Rector, Tel Aviv University.
2010-2015
Professor Emeritus and ProRector, Tel Aviv University.
2015-
Professor Emeritus.