请问Helpman与Grossman是师生吗？

国际经济学的老师们，我想问下Helpman与Grossman是师生关系吗？

应该不是，两人仅仅是合作关系吧，经历上完全没有交集，以下是两人经历，并附上简历

Elhanan Helpman

EDUCATION
Studies, Tel Aviv University:
1966–1969 B.A. (Cum Laude) Economics, Statistics
1969–1971 M.A. (Summa cum Laude) Economics
Studies, Harvard University:
1971–1974 Ph.D. Economics
EXPERIENCE
Tel Aviv University:
1974–1976 Lecturer, Department of Economics
1976–1978 Senior Lecturer
1977 Tenure
1978–1981 Associate Professor
1981–1982 Chairman, Department of Economics
1981–1988 Professor of Economics
1985–1987 Director, Sapir Center for Development
1988–2004 Archie Sherman Professor of International Economic Relations
1990–1992 Director, The Foerder Institute for Economic Research
1991–1992 Director, The Sackler Institute for Economic Studies
2004– Emeritus Professor
Harvard University:
1997–2002 Professor of Economics
2000– Faculty Associate, Weatherhead Center for International Affairs
2002– Galen L. Stone Professor of International Trade
2003– Faculty Associate, Institute for Quantitative Social Science
Other Institutions:
1986– Research Associate, National Bureau of Economic Research
1992– Research Fellow, Center for Economic Policy Research
1992– Fellow, Canadian Institute for Advanced Research
1994–2002 Director, Economic Growth and Policy Program, Canadian Institute for Advanced Research
2002– Research Fellow, CESifo
2002– International Research Fellow, Kiel Institute of World Economics
2004–2014 Director, Program on Institutions, Organizations and Growth, Canadian Institute for Advanced Research
VISITING POSITIONS
1976 Visiting Lecturer, Department of Economics, University of California, Berkeley
1977–1979 Visiting Associate Professor, Department of Economics, University of Rochester
1982–1983 Visiting Professor, Department of Economics, Harvard University
1983–1984 Visiting Professor, Department of Economics, Massachusetts Institute of Technology
1987–1988 Visiting Professor, Department of Economics, Massachusetts Institute of Technology
1988 Visiting Professor, Department of Economics, Harvard University (spring)
1988–1989 Fellow, Institute for Advanced Studies, The Hebrew University of Jerusalem
1991–1992 Visiting Professor and Frank W. Taussig Research Professor, Department of Economics,
Harvard University
1996–1997 Visiting Professor, Department of Economics, Harvard University
2004– Sackler Visiting Professor by Special Appointment, Tel Aviv University


GENE M. GROSSMAN

Education:
Yale University, 1973-1976, B.A. (Summa Cum Laude), Economics, May, 1976.
Massachusetts Institute of Technology, 1976-1980, Ph.D., Economics, June, 1980.
Primary Employment:
The Jacob Viner Professor of International Economics, Princeton University, 1992 - present.
Professor of Economics and International Affairs, Princeton University, 1988 - present.
Chair, Department of Economics, 2002 – 2005, 2009 - 2014.
Director, International Economics Section, Princeton University, 2000 - present.
Acting Director, International Finance Section, Princeton University, 1999 - 2000.
Associate Professor of Economics and International Affairs, Princeton University, 1985 - 1988.
Assistant Professor of Economics and International Affairs, Princeton University, 1980 - 1985.

不是

这个真的不是！！！

不是的，很确定

查过资料应该不是

Helpman、Grossman的大名自然不用介绍，不仅国贸领域，我想整个经济学领域都知道这二位泰斗。Helpman、Grossman在上世纪90年代为新增长理论做出了巨大的贡献，这篇Working Paper是二位今年五月份的最新研究成果，在内生增长模型中嵌入了企业和工人的异质性，讨论了贸易对增长和收入差距的影响。