Shoshana Kamin facts for kids

Shoshana Kamin (born December 24, 1930) is an Israeli mathematician. She was born in the Soviet Union. Her original name was Susanna L'vovna Kamenomostskaya. She is famous for her work on special math problems. These problems are called parabolic partial differential equations. They help us understand how things change over time and space.

Her Life Story

Shoshana Kamin was born in Moscow, Soviet Union. She loved math from a young age. She studied at Moscow University. In 1953, she earned her first degree. She continued her studies there. In 1959, she received an advanced degree. This was like a PhD. Her teacher was a well-known mathematician, Olga Oleinik.

In the early 1970s, Shoshana Kamin and her two sons left the Soviet Union. They moved to Israel. There, she became a professor. She taught at Tel Aviv University. Today, she is a professor emeritus. This means she is a retired professor who still has an important role at the university.

Her Math Discoveries

Shoshana Kamin made big contributions to mathematics. She worked on problems that help us understand how things change.

The Stefan Problem

In the late 1950s, she solved a complex math problem. It is called the Stefan problem. This problem helps scientists understand how things change their state. For example, it can describe how ice melts into water. Or how water freezes into ice. Shoshana Kamin was the first to prove that a solution to this problem exists. She also showed that it is the only possible solution. Her teacher, Olga Oleinik, later expanded on this proof.

Porous Medium Equation

Shoshana Kamin also studied the porous medium equation. This equation helps explain how liquids or gases move. It describes their flow through materials with tiny holes. Think of water moving through a sponge. Or oil flowing through rocks underground. Her work on this equation was very important. It helped other scientists understand how these processes work.

Non-linear Elliptic Equations

She also made important discoveries about non-linear elliptic equations. These are another type of math problem. They are used to describe many natural events. Her research helped to solve these complex equations.

Important Papers

Shoshana Kamin wrote many important papers. These papers shared her discoveries with other mathematicians.

• One of her early papers explained her research on the Stefan problem.
• Another paper, written with Olga Oleinik, gave the first proofs. These proofs showed how to solve the three-dimensional Stefan problem.
• One of her most important papers was about the porous medium equation. It helped explain how solutions to this equation behave over a long time. In this paper, she signed her name using both her current and former surnames.

See Also

• Parabolic partial differential equation
• Refusenik