Haralambie Leahu Mathematics
20 Reviews
From solving assignments and exam help (preparation) to research projects and thesis writing, I can answer to a very wide range of student requests in full compliance with the highest academic standards.
My teaching style relies on a good communication level between me and the student, which gives me the opportunity to quickly learn the student's main deficiencies / issues and adjust my tutoring approach accordingly.
I can also provide mathematical assistance for professionals in areas such as financial engineering (stochastic calculus, derivative pricing) or machine learning (optimization, statistics, probability).
If you have a (high level) math issue do not hesitate to contact me and I will answer as soon as possible.
Subjects
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Linear Programming Beginner-Expert
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Stochastic Calculus Beginner-Expert
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Mathematical finance Beginner-Expert
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Graph Theory and Combinatorics Beginner-Expert
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Game Theory Beginner-Expert
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Complex Analysis Beginner-Expert
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Probability Theory & Stochastic Processes Beginner-Expert
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Functional Analysis Beginner-Expert
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Mathematical foundations in computer science Beginner-Intermediate
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Queuing theory Beginner-Expert
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Bayesian Statistics Beginner-Expert
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Propositional Logic and Boolean Algebra Beginner-Expert
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Markov Chains Beginner-Expert
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Topology (General and Algebraic) Beginner-Expert
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Measure Theory and Functional Analysis Beginner-Expert
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Survival Analysis Beginner-Intermediate
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Stochastic Differential Equations Beginner-Expert
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Advanced Statistics and Probability Beginner-Expert
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Operations Research and Discrete Mathematics Beginner-Expert
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Partial and Ordinary Differential Equations Beginner-Expert
Experience
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Researcher (Jun, 2018–Aug, 2019) at Center of Mathematics and Computer Science, Amsterdam (NL)
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Researcher & Lecturer (Oct, 2014–Sep, 2016) at University of Amsterdam, the Netherlands
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Researcher & Lecturer (Sep, 2011–Aug, 2013) at TU Eindhoven
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Lecturer (Apr, 2008–Dec, 2008) at Vrije Universeteit, Amsterdam
Education
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Doctorate (Apr, 2004–Mar, 2008) from Vrije Universeteit, Amsterdam
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BSc and MSc in Mathematics (Oct, 1996–Jun, 2000) from Universitatea din Bucuresti
Fee details
€36–80/hour (US$41.86–93.02/hour)
Depending on the content and level of the task.
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Amsterdam, Netherlands
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Can travel:
No
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- Last login: Mar 13
- Registered: May 22, 2022
- Total Teaching exp: 20.0 yrs.
- Teaches online: Yes
- Online Teaching exp: 3.0 yrs.
- Teaches at student's home: No
- Homework Help: Yes
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Gender: Male
- Works as: Individual teacher
- Speaks: English
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Fee:€36–80/hour(USD 41.86–93.02/hour)
20 Reviews
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5 out of 5
Daniel
May 20, 2025
Study Success
Great teacher. Knowledgeable, patient and conscientious.
Sophie
May 14, 2025
Amazing tutor!
Haralambie is truly an AMAZING tutor, he always explains things very well and is able to answer my questions clearly and in depth (he even sends you notes and more in-depth explanations after class!). He is also patient and when I didn't understand something, he would explain it until it clicked. Finally, Haralambie is also very easy to contact and responded timely to all my messages. Thanks to him, I understood my advanced Master's level Game Theory and Microeconomics class, and I did well on my final exam!! I couldn't have done it without Haralambie.
Dan
July 25, 2024
Msc Integer Programming level help
I had the pleasure of working with Haralambie on a few tricky problems in integer programming, and I am incredibly grateful for the assistance provided. Haralambie's expertise in the subject matter is evident in the precise and insightful answers and approaches to problems he has provided. On top of high level understanding, he has high level writing skill, which helps a lot in formalizing complex topics and answers. I highly recommend Haralambie to anyone seeking deeper understanding and an experts guidance in any of the mathematical subjects in his scope of knowledge! Very kind and understanding!
Ahmed Souidan
July 25, 2024
Exceptionally Great
Haralmbie was instrumental in helping me pass a very challenging Statistics and Probability Theory course. His patience and clear explanations of complex concepts made all the difference. His ability to simplify difficult topics and ensure I fully understood them was invaluable. Highly recommended! Can go into much depth in Statistics and Probability which is great for post-grad studies
Alice Egranov
April 17, 2024
Great Tutor!
I was having trouble with my stochastic processes class, but Mr.Leahu helped me to understand the difficult concepts. He is very knowledgable and is flexible with scheduling sessions. I highly recommend him!
Vaishnavi Sampath
April 14, 2024
knowledgeable, approachable and easy to understand.
I had difficulty understanding the application and solving stochastic calculus problems and Mr. Leahu made it easier for me to understand in how to solve them. I highly recommend Mr. Leahu for graduate students and for students learning advanced math. He was very flexible and accommodating with his schedule.
DanD
March 1, 2024
Best ML tutor ever
I asked advanced level a machine learning assignment and he did it perfectly. Anyone who wants to ace an ML course should take his tutoring service!! strongly recommend
Chennan Xu
January 26, 2024
Amazing Tutor!
I had a fantastic experience with Haralambie for Markov Chains! He effortlessly simplified complex concepts, used practical examples, and created an engaging learning environment. Patient and responsive, he tailored the sessions to my pace and fostered a positive atmosphere. I highly recommend this tutor for anyone looking to master Markov Chains or any other optimization stuff – a truly exceptional teaching experience!
Sa
January 12, 2024
The best tutor I have worked with
Very knowledgeable, honest, professional, friendly. Highly recommend
Kirsten Castorina
November 16, 2023
Extremely Satisfied with Haralambie’s services
5 ⭐️ ⭐️ ⭐️ ⭐️ ⭐️
Haralambie is a Knowledgeable,professional ,and courageous tutor, he helped my son who studies Actuarial Statistics remotely online to achieve outstanding academic achievement ( he was completely floundering with the Statistical concepts especially Markov chains!)
Haralambie was patient and helped my son get great grades ( i thought he would fail the subjects!)
Thank you Haralambie!
Samraj Singh
June 25, 2023
Great Help
Super suportive and helpful, helped me understand difficult maths concepts
Ravichandran
November 3, 2022
Optimisation Assignment tutoring
Haralambie is a hands on expert to solve assignments in the areas of Optimisation for Data Science within short turn around time. Understand students challenge and guide them in such a way that will make them understand concepts and solve problems effectively.
Would recommend him strongly based on my experience recently.
Ranu Castaneda
October 12, 2022
More than a teacher
Haralambie is more than a teacher, he becomes a support. He is a professional with a high level of knowledge and at the same time qualities of him, such as kindness, patience, friendly, etc. He has helped me to clarify and understand the subjects through simple explanations and all the time he is pending on my progress like a friend. I totally recommend him.
Sanan Aliyev
September 27, 2022
Game theory
He answers the questions accurately he doesn’t want to miss any small information that will add value to the answer, he’s kind and patient ,definitely it won’t be the last time to corporate together many more to come! I would highly recommend this tutor
Drashi
September 8, 2022
Brilliant tutor
He’s so kind, professional and helpful. I had a last minute doubt and I needed urgent guidance with some questions in order to prepare for my exam and he successfully managed to clear all my doubts. The best explanation was so clear and in detail that I could easily learn and practice.
Teachers like him make the education world better
Definitely one of the best teachers on teacheron!!!!!!
James
September 3, 2022
Very knowledgeable and very honest with his work
I got help in an advanced statistics subject. He was very responsive and honest, he agreed to a short discussion on a question for me to make sure he knows the material (most tutors on here wouldn’t) and was incredibly clear about everything. His price is very reasonable for the excellent service he provides, would certainly contact him again for anything I need.
Carolina
August 1, 2022
Perfect Help
I love the fact that he teach very good and have lots of patient and understand 100% what he is explaining.
Super recomend, just amazing!!
Jyoti S
July 25, 2022
Really great tutor - highly recommend
I have been working with him on very advanced statistics and probability course that is at college level and he has been great. Don't think I could have done the class without his help. He knows the content really well and is on time and very approachable too!
Ivan
July 3, 2022
The best tutor
He is very patient, and he knows what he is doing. I can understand the question thoroughly. Strongly recommend!!!
Kim
June 18, 2022
Patient Tutor
He was patient and knowledgeable. Although the topic was pretty hard, he provided me a summary for the overview and helped me a lot.
He was quite flexible with scheduling a lesson such as online lesson or using chat and always reachable which I really appreciate it.
