A Fresh Slice of π

divergent series
Almost anyone in the math world will know that today is π Day. Every year on March  14, the date reads 3/14, the first 3 digits of our favorite constant.  It may be an irrational holiday, but it is about the best that mathematicians get, and it seems to get more popular each year.  Some of my Calculus II students discovered my favorite new way to write π on their final exam today. I found this by chance as I was trying to come up with a suitably difficult problem for them to solve. Here it is:

divergent series
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Preparing for Job Applications

Whether you are looking for a research job, teaching job, or position outside of academia, my advice for graduate students is to begin the job search process as early as possible. These days, candidates face several types of interviews—by video conference, phone, and in-person—and to be fully prepared for these interviews, you need to have enough time to practice for each one. Also, there are a number of steps you can take now to prepare for job applications:

  • Update Your Curriculum Vitae (C.V.): This is the first step you need to do before applying for jobs. I recommend that you write a detailed C.V. that includes all your teaching and research experience.
    Classroom experience is an important aspect of a CV

    Be sure to include your teaching experience on your C.V.; it is an important aspect of your job application in today’s competitive job market. Photo by Alexi Hoeft, used with permission.

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Hookups, Dating, and Markov Chains: Teaching Matrices so that Your Students Won’t Hate Them, Part III

Having taught your students how to visualize matrix multiplication and why performing this bizarre dance of arithmetic could help make society a better place, the next logical step might be to raise a matrix to a power, say, to help your students forecast their dating prospects.  Suppose at the start of orientation 80% of freshman are single, 10% are in a relationship, and 10% are in that ambiguous state that has been variously termed “it’s complicated”, “hookup buddies”, or “friends with benefits.”  Each month those percentages change, according to a fixed set of probabilities: a fifth of the freshman who are single form a relationship, a quarter of those in the “it’s complicated” category become single, etc.  We can organize those probabilities into a transition matrix, in which each entry gives the probability of a student transitioning from the relationship status described by their row to the relationship status described by their column:

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Overcoming the Challenges of Grad School: Preparing for Qualifying Exams

Photo by Mohammed Kaabar

Photo by Mohammed Kaabar

One of the major challenges during my graduate studies was the preparation for the Graduate Qualifying Exam (GQE). I started preparing for that exam six months in advance, and I spent every night solving the previous exams to get an idea about the difficulty levels of the questions. For our GQE, we needed to focus on two areas: Real Analysis and Linear Algebra. To prepare, I went through all the theorems I had learned in analysis, linear algebra, and vector calculus. My advice for graduate students who are planning to take the GQE (or similar exams) in the future is to make sure you understand every single theorem and how to use them in proofs. You need to be able to provide counter-examples if you find that a mathematical statement is false. Gaining such knowledge requires a lot of preparation time, and even six months is not a lot of time to study everything. The best thing you can do to overcome this challenge is specify two hours every day to study the materials, and specify one hour per week to meet with your colleagues who are also planning to take the GQE so you can solve math problems together. Group work is always helpful for solving difficult math problems, and you can get some hints from other people about a particular problem. Also, though the GQE is important, it’s not the most important thing in life, and it’s important to keep your priorities straight.  For instance, during my preparation for the GQE, my health was suffering and as a result, I started to lose my energy and motivation for preparation. I decided that I had to take care of myself and make my health a priority, even if it meant petitioning my department to adjust my course of study (which they approved).  I hope that you too will study hard for the GQE, but keep it in perspective and keep track of what really matters.

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Staying Organized to Improve Productivity

Setting: It’s that time in your graduate career where your advisor says: “Time to start writing the first chapter of your thesis!” or “You should write a summary of all the papers you’ve read so far.” In that moment many thoughts may come to your head, in my case, it was an overwhelming feeling that this was an impossible task. This became my goal for the summer, the fall, and the winter, and yet I couldn’t bring myself to start. All I could think is that it was too much, too many books and papers, so little time!

In an effort to make my life easier (or at least less stressful) and hopefully yours too, here is a list of organization steps that have helped me tackle writing challenges:

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