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About
Keven Chionh /'kevǝn CHiôn/
I am a mathematician undergoing undergraduate studies at Carnegie Mellon University. I am on my way to obtaining an Honors degree in mathematics and additional major in computer science. Passionate about my fields of study, I enjoy taking part in math and programming competitions. To the analytical mind, there is nothing quite as exciting as problem solving. I am currently working on a research project in Calculus of Variations with Dr William Hrusa.
In my free time, I am also a calligrapher and a musician. I spend my Sunday nights playing my violin and making music with the CMU All University Orchestra.
Teaching

Fall 17  21241:
Matrices and Linear Transformations 
Spring 17  21122:
Integration and Approximation 
Fall 16  21127:
Concepts of Mathematics 
(+) Spring 16  21241:
Matrices and Linear TransformationsRecitation Notes
These notes may sometimes differ slightly from the material I present in recitations. I often prepare additional problems that were not shown in class for the rare occasions where we get ahead of time.
Week Topics Covered Recitation Notes 1 System of linear equations Recitation 1 2 System of linear equations / Logic Recitation 2 3 Logic / Vector spaces Recitation 3 4 Forms of linear equations / Linear transformations Recitation 4 5 Matrix operations / Principle of mathematical induction Recitation 5 6 Invertible matrices / Axioms of determinants Recitation 6 7 Properties of determinants Recitation 7 8 Eigenvalues / Eigenvectors / Eigenspaces / Subspaces Recitation 8 9 Spring Break : No recitation 10 Spans / Linear dependence / Bases / Row spaces / Column spaces / Null spaces Recitation 9 11 Row spaces / Column spaces / Dimension / Rank Recitation 10
Exam Reviews
These notes are a compilation of the material I prepared for Exam Reviews. Some of these problems are pitched at a level higher than the actual exams. They are intended to inculcate a strong conceptual grounding in the subject.
Review Session Review Handout Solutions Feb 12, 2016 Midterm 1 Review Solutions 
(+) Fall 15  21241:
Matrices and Linear TransformationsExam Reviews
These notes are a compilation of the material I prepared for Exam Reviews. Some of these problems are pitched at a level higher than the actual exams. They are intended to inculcate a strong conceptual grounding in the subject.
Review Session Review Handout Solutions Sep 27, 2015 Midterm 1 Review Oct 18, 2015 Midterm 2 Review Some solutions Nov 18, 2015 Midterm 3 Review Some solutions
Portfolio
DUALITYGame (Strategy / Fantasy / Platform)DUALITY was the final project for the 15112 course (Spring 15 edition) in CMU. Made over a period of 3 weeks, DUALITY takes you on an epic journey through the galaxy. 
DUALITY is a platform game in which you take on the role of a red waveparticle whose soulmate has been abducted by the universe because you two are not a monochromatic couple. You exhibit both wave and particle properties of light. As a particle, you are like any other solid particle: affected by gravity and unable to pass through glass. However, upon exceeding a certain speed, you involuntarily transforms into a wave. No longer affected by gravity, you can soar to new heights. However, you can no longer control your direction. You are subjected to the laws of reflection and refraction. The only way to regain control is to slow down and morph back into a particle. Can you save your soulmate?
Interested? View the source code here.