# Bon-Soon Lin Graduate Student / TAC UCLA Mathematics Department bonsoon@math.ucla[dot edu] Office: MS 6603 (I am no longer in the old office MS 3973) --- ## Research and Interests I am interested in the following areas, my advisor is Professor Igor Pak. - Enumerative and bijective combinatorics; generating functions. - Planar structures; triangulations. - Algebraic recursive sequences. - Cluster algebra and its combinatorial aspects. - Combinatorial methods in algebra, geometry, analysis, and number theory. - Puzzles, recreational mathematics, and teaching mathematics. ## Office Hours - TBD ## Currently teaching - Graduate bootcamp (analysis and linear algebra) (Summer 2021) Good luck to all! - [Joint Summer Bridge Program: Real analysis and Linear algebra (Summer 2021)](./summer2021/) ## Past Teaching - [Joint Summer Bridge Program for Problem Solving and Math Subject GRE (Summer 2020)](./summer2020/) - Math 33A Linear algebra for Prof. R. Killip. (Spring 2020) - Math 132 Complex analysis Prof. K. Liu. (Spring 2020) - [Math 32BH Honors multivariable calculus. (Winter 2020)](./math32bh.winter2020/) - [Math 495 Teaching College Mathematics / TA Training (Fall 2019)](./math495.fall2019/) - Graduate bootcamp (analysis and linear algebra) (Summer 2019) Good luck to all! - [Math 33B Differential equations. (Spring 2019) Course website for updates and homework.](./math33b.spring2019/) - Math 132 Complex analysis (section 2) for Prof. Chayes (Winter 2019) - Hints and comments to homework: [hw4](./files/w19/ps4.pdf) [hw5](./files/w19/ps5.pdf) [hw6](./files/w19/ps6.pdf) [hw7](./files/w19/ps7.pdf) [hw8](./files/w19/ps8.pdf) [hw9](./files/w19/ps9.pdf) - Math 132 Complex analysis for Prof. K. Liu. (Fall 2018) - Math 32A Multivariable calculus for Prof. S. Eriksson-Bique. (Fall 2018) - Graduate bootcamp (analysis and linear algebra) (Summer 2018) Good luck to all! - Math 180 Graph theory for Prof. D. Yeliussizov. (Spring 2018) - Math 184 Enumerative combinatorics for Prof. I. Pak. (Winter 2018) - Math 135 Ordinary differential equations for Prof. O. Ben Neria. (Fall 2017) - Math 33A Linear algebra for Prof. N. Bhaskhar. (Summer 2017) - Math 115A Linear algebra for Prof. O. Ben Neria. (Spring 2017) - [Examples Sheet](./files/115A-spring2017.pdf). - Math 33A Linear algebra for Prof. J. Chanussot. (Winter 2017) - [Course log](./files/33A-winter-2017.html) - Math 115A Linear algebra for Prof. A. Manion. (Fall 2016) - [Examples Sheet](./files/math115a-examples-sheet.pdf). - Math 33A Linear algebra for Prof. O. Ben Neria. (Spring 2016) - [MT1 Solution](./files/33A-mt1-solution-spring-2016.pdf). [Review Practice MT2 Examples Sheet](./files/33A-mt2-review-practice-spring-2016.pdf) and [some answers to the ones we didn't go over.](./files/33A-mt2-review-practice-spring-2016-ans.pdf) [Review Sheet for Final](./files/33A-final-review-sheet-spring-2016.pdf) and [some answers to the ones we didn't go over.](./files/33A-final-review-sheet-spring-2016-ans.pdf) - Math 3B Calculus for Prof. P. Greene. (Winter 2016) - Math 33A Linear algebra for Prof. O. Ben Neria.(Winter 2016) - [A review sheet](./files/33A-review-sheet-winter-2016.pdf). [A topics list](./files/33A-list-of-topics-winter-2016.txt). - Math 3A Calculus for Prof. P. Greene. (Fall 2015) - Math 33A Linear algebra for Prof. D. Penneys. (Fall 2015) - Math 33A Linear algebra for Prof. D. Weisbart. (Spring 2015) - Math 33A Linear algebra for Prof. T. Brown. (Winter 2015) - Math 1 Pre-calculus for Prof. T. Sinclair. (Fall 2014) ## Talks - January 2019 Polynomials, permutations, percolations, polygons, propositions, paths, and patterns - An exploration in Schroder numbers. (GSO Seminar) - October 2018 Surjections, epimorphisms, and the four coloring theorem. (GSO Seminar) - May 2018 Map coloring theorems, and graphs on higher genus surfaces. (GSO Seminar) - February 2018 Equiareal triangulations, and Monsky's theorem. (GSO Seminar) - November 2017 Points on a plane -- Combinatorial geometry of planar point sets. (GSO Seminar) - May 2017 Enumeration of unlabeled structures with symmetry. (ATC) - March 2017 Enumeration of labeled trees. (GSO Seminar) - June 2016 Chromatic symmetric functions. (Math 285N) ## Javascript Demonstrations - [Are there two subsets with the same sum?](./checkset.html) - [URM: Unlimited register machine.](./urm.html) - [Make 24 game.](./24/) - [Discrete equilibrium with candies.](./math33b.spring2019/files/candy.html) - [Phase portraits of 2x2 linear ODE systems](./math33b.spring2019/files/PHASEPORT), and an [screensaver version](./math33b.spring2019/files/PHASEPORT-AUTO). - [A simple bifurfaction diagram plotter](./BIFURCATION-DIAGRAM). - [A 2 dimension planar phase portrait/vector field plotter](./PLANAR-PHASE-PORTRAIT). - [Finding standard form for a conic](./STANDARD-CONIC). - [Value of Zeta on the critical line](./ZETA-FUNCTION). - [Strange attractor.](./CHAOS). [Vanity.](./vanity/) ![Tides. -B](./tides.jpeg)