Serge Lang: The Maverick Mathematician and Passionate Activist

A Legacy of Mathematical Contributions and Controversy

Serge Lang was a French-American mathematician renowned for his groundbreaking work in number theory and algebra, particularly with his influential textbook, Algebra. However, his remarkable mathematical career was often overshadowed by his fervent activism, marked by controversy and debates that stirred the academic community.

Early Life and Education

Born on May 19, 1927, in Saint-Germain-en-Laye, France, Lang moved to California with his family as a teenager. He graduated from Beverly Hills High School in 1943 and then earned an AB from the California Institute of Technology in 1946. Lang pursued his Ph.D. in mathematics at Princeton University, where he wrote his thesis, "On quasi algebraic closure," under the supervision of Emil Artin.

Mathematical Contributions

Lang's mathematical journey spanned various areas, including:

• Geometric analogues of class field theory and diophantine geometry
• Diophantine approximation and transcendental number theory, proving the Schneider-Lang theorem
• Modular forms and modular units
• Distribution on a profinite group
• Value distribution theory

Awards and Honors

Lang received the Frank Nelson Cole Prize in 1960, a testament to his significant contributions to number theory. He was also an esteemed member of the Bourbaki group, a collective of mathematicians dedicated to advancing mathematical knowledge.

Activism and Controversy

Lang's activism often stirred controversy, particularly during the 1960s student activist movement. He campaigned against the Vietnam War and successfully fought against the nomination of Samuel P. Huntington to the National Academies of Science. Later in his life, Lang became an HIV/AIDS denialist, claiming that HIV had not been proven to cause AIDS. This stance led to protests against Yale University's research into HIV/AIDS.

Personal Life and Milestones

Lang had a twin brother who became a basketball coach and a sister who became an actress. He held faculty positions at several prestigious institutions, including the University of Chicago and Yale University. Lang's personal life was marked by a tumultuous dispute with Columbia University, leading to his departure in 1971.

Legacy and Impact

Lang's mathematical legacy continues to influence modern number theory, while his activism serves as a reminder of the importance of critically evaluating scientific research. His unwavering passion and commitment to his beliefs, whether in mathematics or social causes, have left an indelible mark on the academic community.

Quotes and Memorable Sayings

Lang's wit and wisdom are reflected in his notable quotes, including:

• "Mathematics is an adventure of the human spirit."
• "One should always try to get rid of the labels."

By embracing controversy and challenging conventional wisdom, Serge Lang left a lasting impact on the world of mathematics and beyond. His legacy serves as a testament to the power of passion, dedication, and intellectual curiosity.