Maryam Mirzakhani, a Stanford University professor who was the first and only woman to win the prestigious Fields medal in mathematics, has died. She was 40.
 
Maryam Mirzakhani: 'The more I spent time on maths, the more excited I got'

Mirzakhani, who had breast cancer, died on Saturday, the university said. It did not indicate where she died.
In 2014, Mirzakhani was one of four winners of the Fields medal, which is presented every four years and is considered the mathematics equivalent of the Nobel prize. She was named for her work on complex geometry and dynamic systems.
“Mirzakhani specialized in theoretical mathematics that read like a foreign language by those outside of mathematics: moduli spaces, Teichmüller theory, hyperbolic geometry, Ergodic theory and symplectic geometry,” the Stanford press announcement said.
“Mastering these approaches allowed Mirzakhani to pursue her fascination for describing the geometric and dynamic complexities of curved surfaces spheres, doughnut shapes and even amoebas – in as great detail as possible.”
Her work had implications in fields ranging from cryptography to “the theoretical physics of how the universe came to exist”, the university said.
Mirzakhani was born in Tehran and studied there and at Harvard. She joined Stanford as a mathematics professor in 2008. Iran’s president, Hassan Rouhani, issued a statement praising Mirzakhani.
“The grievous passing of Maryam Mirzakhani, the eminent Iranian and world-renowned mathematician, is very much heart-rending,” Rouhani said in a message that was reported by the Tehran Times.
Iran’s foreign minister, Mohammad Javad Zarif, said her death pained all Iranians, the newspaper reported.
“The news of young Iranian genius and math professor Maryam Mirzakhani’s passing has brought a deep pang of sorrow to me and all Iranians who are proud of their eminent and distinguished scientists,” Zarif posted in Farsi on his Instagram account.
 
Fields Medals 2014: the maths of Avila, Bhargava, Hairer and Mirzakhani explained
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“I do offer my heartfelt condolences upon the passing of this lady scientist to all Iranians worldwide, her grieving family and the scientific community.”
Mirzakhani originally dreamed of becoming a writer but then shifted to mathematics. When she was working, she would doodle on sheets of paper and scribble formulas on the edges of her drawings, leading her daughter to describe the work as painting, the Stanford statement said.
Mirzakhani once described her work as “like being lost in a jungle and trying to use all the knowledge that you can gather to come up with some new tricks, and with some luck you might find a way out”.
Stanford president Marc Tessier-Lavigne said Mirzakhani was a brilliant theorist who made enduring contributions and inspired thousands of women to pursue math and science.
Mirzakhani is survived by her husband, Jan Vondrák, and daughter, Anahita.

Maryam Mirzakhani has become the first woman to win the Fields Medal, the most prestigious prize in mathematics. Mirzakhani, 37, is of Iranian descent and completed her PhD at Harvard in 2004. Her thesis showed how to compute the Weil-Petersson volumes of moduli spaces of bordered Riemann surfaces. Her research interests include Teichmüller theory, hyperbolic geometry, ergodic theory, and symplectic geometry. She is currently professor of mathematics at Stanford University, and predominantly works on geometric structures on surfaces and their deformations.
What are some of your earliest memories of mathematics?

As a kid, I dreamt of becoming a writer. My most exciting pastime was reading novels; in fact, I would read anything I could find. I never thought I would pursue mathematics until my last year in high school. I grew up in a family with three siblings. My parents were always very supportive and encouraging. It was important for them that we have meaningful and satisfying professions, but they didn't care as much about success and achievement.

In many ways, it was a great environment for me, though these were hard times during the Iran-Iraq war. My older brother was the person who got me interested in science in general. He used to tell me what he learned in school. My first memory of mathematics is probably the time that he told me about the problem of adding numbers from 1 to 100. I think he had read in a popular science journal how Gauss solved this problem. The solution was quite fascinating for me. That was the first time I enjoyed a beautiful solution, though I couldn't find it myself.
What experiences and people were especially influential on your mathematical education?

I was very lucky in many ways. The war ended when I finished elementary school; I couldn't have had the great opportunities that I had if I had been born 10 years earlier. I went to a great high school in Tehran – Farzanegan – and had very good teachers. I met my friend Roya Beheshti during the first week of middle school. It is invaluable to have a friend who shares your interests, and it helps you stay motivated.

Our school was close to a street full of bookstores in Tehran. I remember how walking along this crowded street, and going to the bookstores, was so exciting for us. We couldn't skim through the books like people usually do here in a bookstore, so we would end up buying a lot of random books. Also, our school principal was a strong-willed woman who was willing to go a long way to provide us with the same opportunities as the boys' school.

Later, I got involved in Math Olympiads that made me think about harder problems. As a teenager, I enjoyed the challenge. But most importantly, I met many inspiring mathematicians and friends at Sharif University. The more I spent time on mathematics, the more excited I became.
Could you comment on the differences between mathematical education in Iran and in the US?
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It is hard for me to comment on this question since my experience here in the US is limited to a few universities, and I know very little about the high school education here. However, I should say that the education system in Iran is not the way people might imagine here. As a graduate student at Harvard, I had to explain quite a few times that I was allowed to attend a university as a woman in Iran. While it is true that boys and girls go to separate schools up to high school, this does not prevent them from participating say in the Olympiads or the summer camps.

But there are many differences: In Iran you choose your major before going to college, and there is a national entrance exam for universities. Also, at least in my class in college, we were more focused on problem-solving than on taking advanced courses.
What attracted you to the particular problems you have studied?

When I entered Harvard, my background was mostly combinatorics and algebra. I had always enjoyed complex analysis, but I didn't know much about it. In retrospect, I see that I was completely clueless. I needed to learn many subjects which most undergraduate students from good universities here know.

I started attending the informal seminar organized by Curt McMullen. Well, most of the time I couldn't understand a word of what the speaker was saying. But I could appreciate some of the comments by Curt. I was fascinated by how he could make things simple and elegant. So I started regularly asking him questions, and thinking about problems that came out of these illuminating discussions.

His encouragement was invaluable. Working with Curt had a great influence on me, though now I wish I had learned more from him. By the time I graduated I had a long list of raw ideas that I wanted to explore.
Can you describe your research in accessible terms? Does it have applications within other areas?

Most problems I work on are related to geometric structures on surfaces and their deformations. In particular, I am interested in understanding hyperbolic surfaces. Sometimes properties of a fixed hyperbolic surface can be better understood by studying the moduli space that parameterises all hyperbolic structures on a given topological surface.

These moduli spaces have rich geometries themselves, and arise in natural and important ways in differential, hyperbolic, and algebraic geometry. There are also connections with theoretical physics, topology, and combinatorics. I find it fascinating that you can look at the same problem from different perspectives and approach it using different methods.
What do you find most rewarding or productive?

Of course, the most rewarding part is the "Aha" moment, the excitement of discovery and enjoyment of understanding something new – the feeling of being on top of a hill and having a clear view. But most of the time, doing mathematics for me is like being on a long hike with no trail and no end in sight.

I find discussing mathematics with colleagues of different backgrounds one of the most productive ways of making progress.
What advice would you give those who would like to know more about mathematics – what it is, what its role in society has been, and so on?

This is a difficult question. I don't think that everyone should become a mathematician, but I do believe that many students don't give mathematics a real chance. I did poorly in math for a couple of years in middle school; I was just not interested in thinking about it. I can see that without being excited mathematics can look pointless and cold. The beauty of mathematics only shows itself to more patient followers.

Published: 17 July 2017

Shareholders of Chicago-based PrivateBancorp on Friday approved a sale to Canadian bank CIBC after two price increases boosted the deal to a current value of about $4.8 billion.

The acquisition of the publicly traded bank, which operates as The PrivateBank, represents a 26 percent increase to the price announced in June.

"Today's vote reinforces our stockholders' support for the strategic opportunity a combination with CIBC offers," Larry Richman, PrivateBancorp's president and CEO, said in a news release. "This will make our strong bank even stronger with the same commitment to building long-term client relationships, the same experienced team, and the same dedication to Chicago and all of the communities we serve."

The transaction is expected to close next month, pending approval from U.S. and Canadian banking regulators. Illinois regulators signed off on the deal earlier this month.

Toronto-based CIBC initially offered to buy PrivateBancorp in June in a cash and stock deal valued at $3.8 billion, but improving valuations of U.S. banks in the wake of the November election of President Donald Trump made the deal less attractive to investors. CIBC raised its offer in March by about 20 percent.

In April, proxy advisory firm Institutional Shareholder Services recommended PrivateBancorp shareholders vote down the deal, leading CIBC to boost the cash consideration May 4 by $3 per share.

CIBC President and CEO Victor Dodig said in a news release Monday it was CIBC's "best and final offer," leaving it up to PrivateBancorp stockholders to decide.

Founded in 1867, the Canadian Imperial Bank of Commerce has 11 million personal banking and business clients and $501.4 billion in total assets. It is looking to expand its reach in North America through the PrivateBancorp acquisition.

PrivateBancorp was founded in 1989 and opened its first office two years later in Chicago. The company went public in 1999.

Primarily located in the Midwest, PrivateBancorp has 36 offices in 13 states and $20.4 billion in assets.

Published: 13 May 2017