Month: March 2022

Federica Semeraro

Federica Semeraro

Born in Martina Franca (Taranto) in Puglia, Italy • Birth year 1990 Studied Mathematics at University of Bari, Italy (Bachelor) and University of Ferrara, Italy (Master) • Highest Degree Master in Mathematics • Lives in Ferrara, Italy • Occupation Software Engineer

My love for maths started when I was a child in primary school. My teacher at that time, who was also the only teacher for all the subjects, instilled in me the passion for numbers. I remember that my mom was angry at me because I always started with maths exercises even if the deadline was for the week after and I didn’t have maths class for days.

I was still very passionate about maths during secondary school and high school until I needed to make a decision about my future. What do you want to be when you grow up?

I decided to apply for the placement test in Physiotherapy and while I was waiting for the test results, I started to take part in maths classes at university just out of curiosity. It was incredible how abstract maths was, sometimes it was hard to understand what professors tried to explain to me! When I received the positive result of the Physiotherapy test, I decided without thinking twice to continue mathematical studies instead! 

In my life, still nowadays, I like to challenge myself with difficult projects and new objectives.

In my life, still nowadays, I like to challenge myself with difficult projects and new objectives. I continued studying maths, even though I was disheartened at times because maths was really hard and I sometimes thought about dropping out. My perseverance allowed me to finish the first three years of studies at the University of Bari with a Bachelor’s degree, and then I decided to move to Ferrara, where I did a Master’s degree in mathematics in two years.

For my master thesis, I did a project with high school students on spherical geometry and compared it to the euclidean geometry typically taught in school. At the end of my Master’s, I decided to take part in a university project, where professors helped students to get in touch with companies, start-ups and projects to easily find a job offer. Students were able to apply for job positions, even if their studies were not aligned with the job offer. That’s what I did. In this way, I had the opportunity to get to know the company where I first came into contact with automation and software engineering. 

It was really incredible how the logical and deductive reasoning learned through my mathematical studies allowed me to pass that test and help me in my future career.

The aspect that caught my attention was that you could develop the software, test it on the specific machine it is designed for during the commissioning phase in the factory, and then travel to the customers’ company for installation, thus being part of the entire development and installation process. I applied for the job, sent my CV and took a logic test. It was an engineering application and some of those problems involved motors, servos, chains and belts. I left them blank and solved only what I was able to do with maths problem solving skills. It was really incredible how the logical and deductive reasoning learned through my mathematical studies allowed me to pass that test and help me in my future career.

I got the job and started training as a software engineer in that company , working in industrial automation for packaging machines. For this job I travelled all across the world: USA, Thailand, Germany, Poland, Belgium, France, Ireland, Italy, etc., sometimes for entire months, spending about 30% of the year in other countries. I’m a foreigner in each place I visited, but I’m a flexible person, so I was quite fast to adapt myself to the different ways of life. 

Today I feel strong and I move on without giving importance to these kinds of things, demonstrating with results that the work is not gender-specific.

It’s not easy working in a field where 98% of the co-workers are male, because it’s a common belief that there are men’s jobs and women’s jobs. When I started my job I tried to learn something new every day as everything was new for me, and I tried to show everyone that I was capable and smart to do this job. Sometimes it happens that someone uses some comments to discriminate against women working in this field. At the beginning of my professional career, hearing these comments certainly made me feel deprived and desolated. Today I feel strong and I move on without giving importance to these kinds of things, demonstrating with results that the work is not gender-specific.

If I could tell  my 20-year old self something, I would say to not regret any decisions you made even if the first three years at University have been the worst period in your life, because with curiosity, strength, tenacity and patience you will reach your goals. I would also say to go home often and hug your parents, because you will have vacations and job trips all over the world, but there’s no place as comfortable and full of love as home.

Posted by HMS in Stories
Constanza Rojas-Molina

Constanza Rojas-Molina

Born in La Serena, Chile • Birth year 1983 Studied Mathematics at Universidad de La Serena in Chile and at Université Pierre et Marie Curie – Paris VI in France • Highest Degree PhD in Mathematical Physics from Université de Cergy-Pontoise, France • Lives in Paris, France • Occupation Lecturer at the CY Cergy Paris University

I was a late starter in maths. As a child, I was always curious and interested in many things, I was an avid reader and spent a considerable amount of time drawing. During highschool, I learnt about physics and chemistry and I was hooked on the quantum world. There, all the intuition was lost and the usual rules of physics didn’t apply anymore, it was fascinating, like Alice in Wonderland! But even then, maths was not among my main interests. I never made a connection with physics or chemistry. I knew it was something useful and necessary to know, but I always kept it at a reasonable distance. You would never see me solving maths exercises for fun. Why would I, when I had a pile of comics and books to read and stories to draw?

I discovered operator and spectral theory, functional analysis and the maths of quantum and statistical mechanics. And it was beautiful.

It was only when I entered university that my view of maths changed. University maths were something completely different. My hometown is a region of Chile known for its clear skies, suitable for observational astronomy. It’s where the first telescopes in Chile were built. So, since I didn’t have the resources to travel to the capital to study, studying physics at the local university seemed like a good fit. With all the innocence that the age of 17 could give me, I thought: if I’ll ever amount to anything, it shouldn’t matter where I start.

So, I decided to stay home and enroll in the local university physics program. The first two years of this program were in common with the maths program, and by studying physics I realized that maths was connected to many things and was very important. So important that at some point after two years I thought: I can’t continue this without having a good understanding of maths (I would have made a terrible physicist). During those two years, I found beauty in the clarity of maths. I got a first glimpse of the elegance of proofs and the usefulness of drawing the picture to go with it. I discovered operator and spectral theory, functional analysis and the maths of quantum and statistical mechanics. And it was beautiful. I was excited to be able to study physics problems from a rigorous and clear point of view.

I went to Paris, without knowing anyone, with no grant and no connections whatsoever.

So excited that I didn’t stop when I finished my undergraduate studies. I went to Paris, without knowing anyone, with no grant and no connections whatsoever. With all the courage that ignorance can give. Ignorance of the country, of the system, of how academia works. That ignorance and the support of my family made me brave enough to cross the ocean looking to satisfy my curiosity.

It’s been many years since that happened. I did my Master’s in Paris and then continued with a PhD in mathematical physics. I successfully applied to a Marie Curie Fellowship of the EU to do a postdoc in Munich. Then I did a postdoc in Bonn. Then I was a Junior Professor in Duesseldorf, I was a DFG (German Research Foundation) grant holder, I supervised students. I still do. Now I’m back to France as a lecturer. I’m also an illustrator and for the past years I’ve been focusing on mathematical communication.

This is my mathematical adventure (…). And I say adventure because this was clearly a detour, as I was supposed to become an illustrator. Now I’m both.

Looking back, I am aware now that I was a total outsider. I made my way through it and became part of the system, taking an unusual path and building my own alternative journey. Academia is tough, it’s elitist, it’s traditionalist, it’s conservative, it’s a lonely place and can lead to a lot of frustration when one does not entirely fit. It’s easy to get lost in the bad thoughts when there is no support for those that don’t follow a straight path. However, I’ve met some wonderful people along the way who helped me build my path, collaborators, and friends, and with them I’ve been able to experience the part of the job that is about connections. Connecting ideas, connecting with colleagues, connecting with students, connecting with people. That is the best side of this job, and I’m grateful for that. This is my mathematical adventure, it has ups and downs and cliffhangers and suspense, and some teary moments and some funny ones. And I say adventure because this was clearly a detour, as I was supposed to become an illustrator. Now I’m both.

I like to remember how my mathematical adventure started, because it helps me feel connected with my most essential motivations. My motivations weren’t to be a tenured professor, or a group leader, or get all the grants. My motivations were to discover and enjoy the act of discovering.

Posted by HMS in Stories
Karem Guzmán Elgueta

Karem Guzmán Elgueta

Born in Los Vilos, Chile • Birth year 1990 • Studied B. Sc. in Mathematics and ​ B. Sc. in Mathematical Engineering at Universidad de Santiago in Santiago, Chile • Highest degree Master in Statistics • Lives in Santiago, Chile • Occupation Financial Advisory Consultant

My relationship with mathematics began when one day in high school a classmate asked me: “Karem, you are very good at mathematics, have you thought about studying it at university?” I will never forget this question because it was this one that made me aware of my love for mathematics. Since I was little, I had a knack for numbers and the subject always entertained me, so I decided to formally continue studying Mathematical Engineering at University.

During college, mathematics opened a new world, a lot of theory and logic work. It was not easy, including many hours of study and frustrations, and not always achieving good exam results. It was a long and hard road, but with resilience I managed to finish successfully.

I liked the time flexibility these jobs gave me, but they didn’t make me happy, as I felt a sense of intellectual emptiness. This is why I decided to go back to university to pursue a Master’s degree in statistics and you can’t imagine how much I liked it!

After graduating, I worked for two years as a high school teacher and as an assistant professor at the university. I liked the time flexibility these jobs gave me, but they didn’t make me happy, as I felt a sense of intellectual emptiness. This is why I decided to go back to university to pursue a Master’s degree in statistics and you can’t imagine how much I liked it! I was fascinated by the subjects associated with models and their theories (data mining, predictive modeling, supervised and unsupervised learning as well as time series, among other models), so today I am a lover of statistics.

Could you imagine what would happen if one day you make a withdrawal from your card and the bank denies it for not having funds? A systemic shock would surely occur, so these models are essential.

I am currently working for a professional services firm and I have experience in credit risk modeling projects, e.g. provision models under local regulations and International Financial Reporting Standards, countercyclical provision models, forward looking models, management models such as admission, behavior and collection, as well as in liquidity risk projects, e.g. construction of flow projection models/methodologies. Credit risk models, in general, aim to mitigate the risk of non-compliance with contracted payments, so provision models estimate an amount of money that a financial institution could eventually lose if all its customers decide not to pay. Management models, such as admission models, aim to estimate a client’s ability to meet their payment obligations, and thus help the financial institution to select its clients. On the other hand, liquidity risk models seek to ensure sufficient cash flow to comply with all normal operations associated with a financial institution: deposits, drafts, transfers, withdrawals of investment funds, etc. Could you imagine what would happen if one day you make a withdrawal from your card and the bank denies it for not having funds? A systemic shock would surely occur, so these models are essential.

My work is dynamic and very demanding, but I love it because I never do the same thing. There are always new projects and clients to care for, so I enjoy my work every day. I invite all women who like mathematics to dare and study it without fear, and if you also have an inclination for finance, then the world is yours!

Posted by HMS in Stories