Mathematics

1. North Carolina State University, Raleigh, North Carolina, June 1972.

2. University of Sussex, Brighton, England, April 30, 1974.

3. University of Paris, Paris, France, May 2, 1974.

4. Battelle Institute, Geneva, Switzerland, November 15, 1974.

5. Mathematisches Institut Universitat Zurich, Zurich, Switzerland, November 19, 1974.

6. Georgia Institute of Technology, Atlanta, Georgia, March 6, 1975.

7. University of Texas at Arlington, Arlington, Texas, March 14, 1975.

8. University of Houston, Houston, Texas, November 14, 1975.

9. University of Cincinnati, Cincinnati, Ohio, November 29, 1979.

10. Scuola Normale Superiore, Pisa, Italy, May 8, 1980.

11. Universita di Roma, Rome, Italy, May 12 and May 13, 1980.

12. Universita di Bari, Bari, Italy, May 14, 1980.

13. Universita di Trento, Trent, Italy, June 25, 1980.

14. University of South Florida, Tampa, Florida, January 30, 1981.

15. Universita di Padova, Padua, Italy, June 12 and June 15, 1981.

16. Universita di Bari, Bari, Italy, May 5 and May 7, 1982.

17. Universita di Trento, Trent, Italy, May 21, 1982.

18. Universita di Padova, Padua, Italy, May 24, 1982.

19. Universita di Roma, Rome, Italy, May 31, 1982.

20. University of Arkansas, Fayetteville, Arkansas, September 16, 1982.

21. Georgetown University, Washington, D.C., November 12, 1982.

22. University of Oklahoma, Norman, Oklahoma, February 17, 1983.

23. Claremont University, Claremont, California, March 8, 9, 10, 1983.

24. University of Florida, Gainesville, Florida, January 24, 1984.

25. North Carolina State University, Raleigh, North Carolina, April 4, 1984.

26. Emory University, Atlanta, Georgia, January 17, 1985.

27. M. D. Anderson Hospital and Tumor Institute, Houston, Texas, September 25, 1985.

28. University of Houston, Houston, Texas, September 26, 1985.

29. James Madison University, Harrisonburg, Virginia, October 10, 1985.

30. Michigan State University, East Lansing, Michigan, February 19, 1987.

31. University of Iowa, Iowa City, Iowa, April 14, 1988.

32. Tulane University, New Orleans, Louisiana, October 28, 1988.

33. Universita di Roma, Rome, Italy, July 8, 1991.

34. Centrum voor Wiskunde en Informatica, Amsterdam, The Netherlands, June 10, 1992.

35. Frontier Lecture Series, Texas A & M University, College Station, Texas, December 7-10, 1992.

36. University of Houston, Houston, Texas, December 11, 1992.

37. Universita di Padova, Padua, Italy, May 14, 1993.

38. University of South Alabama, Mobile, Alabama, May 26-29, 1994.

39. Oxford University, Oxford, England, July 22, 1994.

40. Texas A & M University, College Station, Texas, February 22, 1995.

42. University of Marrakesh, Marrakesh, Morocco, June 12-15, 1995.

43. Polytechnical University of Madrid, Madrid, Spain, June 21, 1995.

44. Universita di Padova, Padua, Italy, May 31, 1996.

45. Arizona State University, Tempe, Arizona, March 7, 1997.

46. Mayo Clinic, Rochester, Minnesota, March 25, 1997.

47. University of Marrakesh, Marrakesh, Morocco, June 20, 1997.

48. University of Michigan, Ann Arbor, Michigan, November 13, 1997.

49. University of Tennessee at Knoxville, Knoxville, Tennessee, March 5, 1998.

50. Universidad Nacional Autonoma de Mexico, Mexico City, Mexico, April 27, 28, 1998.

51. Centro Internacional de Ciencias, Cuernavaca, Morelos, Mexico, April 29, 30, 1998.

52. University of Alabama at Huntsville, Huntsville, Alabama, March 12, 1999.

53. North Carolina State University, Raleigh, North Caroliina, March 31, 2000.

54. Universita di Padova, Padua, Italy, October 27, 2000.

55. Beijing University of Science and Technology, Beijing, China, August 12. 2002.

56. Middle Tennessee State University, Murfreesboro, Tennessee, October 9, 2002.

57. Meharry Medical College, Nashville, Tennessee, April 8, 2003.

58. Universita di Padova, Padua, Italy, May 28, 2003.

59. University of Miami, Miami, Florida, October 10, 2003.

60. Middle Tennessee State University, Murfreesboro, Tennessee, October 9, 2003.

61. Meharry Medical College, Nashville, Tennessee, April 8, 2003.

62. Universita di Padova, Padua, Italy, June 14, 2004.

63. Tamkang University, Taipei, Taiwan, July 26. 2004.

64. National Center for Theoretical Sciences, National Tsing-Hua Unversity, Hsinchu, Taiwan, July 29, 2004.

65. National Chung Hsing University, Taichung, Taiwan, July 30, 2004.

66. Purdue University, West Lafayette, Indiana, November 12, 2004.

67. Southern Methodist University, Dallas, Texas, November 17, 2004.

68. Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, Madrid, Spain, July 17, 2005.

68. Mathematical Biology Institute, Ohio State University, Columbus, Ohio, November 1, 2005.

69. University of Victoria, Victoria, Canada, March 6, 2006.

70. Universita di Padova, Padua, Italy, June 22, 2006.

71. Georgia Tech, Atlanta, Georgia, November 14, 2007.

72. University of California at Irvine, Irvine, California, May 5, 2008.

73. Scuola Galileiana di Studi Superiore, University of Padua, Padua, Italy, Invited Lectures, May 22, 23, 28, 29, 2008.

74. University of Bordeaux 2, Bordeaux, France, March 23, 2009.

75. Centre de Recerca Matematica, Universitat Autonoma de Barcelona, Barcelona, Spain, March 26, 2009.

76. University of Le Havre, Le Havre, France, April 3, 2009.

77. University of Tokyo, Tokyo, Japan, September 8, 2009.

78. University of Paris VI, Faculté de Mathématiques Pierre et Marie Curie, Paris, France, June 8, 2010.

79. University of Lyon, Institut Camille Jordan, Lyon, France, June 9, 2011.

80. Middle Tennesee State University, MTSU Fall 2011 Distinguished Lecture, Murphreesboro, TN, October 19, 2011.

81. Purdue University, CCAM Visiting Scientists Program on Mathematical Biology Colloquium, West
Lafayette, IN, March 9, 2012.

82. City University of Hong, Kong, Hong Kong, China, May 16, 2012.

83. Hong, Kong Polytechnic University, Hong Kong, China, May 16, 2012.