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Columbia B.A. Math '24, M.S. Math '25
Pj Y.

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Hourly Rate: $50
Response time: 19 minutes

About Pj


Bio

Hi! My name's PJ, and I recently completed my undergraduate in Mathematics, Statistics, and Computer Science, and my M.S. Operations Research, all at Columbia. My coursework spans PDEs, real analysis, algebra, probability, and computational complexity, ranging from undergraduate to the PhD level. I have earned A's in PhD-level Analysis/Probability/Stochastic Modeling courses, giving me a rigorous mathematical foundation that I bring directly into my teaching.

I spent three years as a Head...

Hi! My name's PJ, and I recently completed my undergraduate in Mathematics, Statistics, and Computer Science, and my M.S. Operations Research, all at Columbia. My coursework spans PDEs, real analysis, algebra, probability, and computational complexity, ranging from undergraduate to the PhD level. I have earned A's in PhD-level Analysis/Probability/Stochastic Modeling courses, giving me a rigorous mathematical foundation that I bring directly into my teaching.

I spent three years as a Head Teaching Assistant in Columbia's Statistics department, serving graduate-level courses in Probability Theory, Statistical Inference, Linear Regression, and Stochastic Processes. In that role, I held regular one-on-one and small group office hours, wrote original expository materials, and delivered recitation lectures to classes of undergraduate and graduate students. Based on teaching evaluations, 80% of my tutees showed measurable improvement in academic performance. This experience taught me how to meet students where they are, whether they need help building intuition from scratch or pushing through the more technically demanding aspects of a proof-based course.

I am confident tutoring mathematics, statistics, probability, and computer science subjects at the undergraduate and graduate level, and I am comfortable working with students one-on-one or in small groups.


Education

Columbia University
Mathematics
Columbia University
Masters

Policies


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Approved Subjects

Discrete Math

Discrete Math

My coursework/research in Data Structures, Algorithms, Probability, and Stochastic Models covers topics that directly overlap with discrete math curricula, including combinatorics, graph theory, and proof-based reasoning. I have extensive teaching experience as a Head TA for 4+ graduate-level courses at Columbia, where I wrote original instructional materials and ran recitations that measurably improved student performance. My research on combinatorial bidding and algorithm design further reflects hands-on fluency with discrete mathematical concepts at an advanced level.
Real Analysis

Real Analysis

My BA in Mathematics from Columbia, combined with my graduate coursework in Probability Theory, Stochastic Analysis, and Convex Optimization, gave me deep exposure to the rigorous proofs and fundamentals in Real Analysis. As a Head TA for courses including Probability Theory and Stochastic Processes, I have extensive experience breaking down mathematically dense material for students at both the undergraduate and graduate level. I have also performed well in PhD-level Analysis/Probability Theory courses at Columbia.
ACT Math
Algebra 1
Algebra 2
Calculus
Differential Equations
Linear Algebra
Probability
SAT Math
Statistics
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Response time: 19 minutes
Hourly Rate: $50
Response time: 19 minutes
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