The Berkeley Math Circle

Calendar

Welcome to the BMC Archives. This section of the site was created to archive the session handouts and Monthly Contests from the Circle since 1998. To navigate this page, simply select the desired year you wish to view under either Session Handouts or Monthly Contests. The info for that year will be displayed underneath your selection.

Session Handouts:

Monthly Contests:

Calendar for 2022 - 2023 Academic Year

Instructor Topic Room
Harry Main-Luu Beginners I - Tetris Party Championship
PDF, PDF
Online
Harry Main-Luu Beginners II - Tetris Party Championship
PDF, PDF
Evans 1015
Tom Davis Intermediate I - Conway's Rational Tangles
PDF
Cheit C230
Quan Lam Intermediate II - Modular Arithmetic, Fermat Little Theorem, Diophantine Equations, Counting
PDF
Cheit C220
Laura Pierson Advanced - Counting Trees and Parking Cars
PDF
Online
Instructor Topic Room
Harry Main-Luu Beginners I - Tetris Party Championship II
PDF, PDF
Online
Harry Main-Luu Beginners II - Tetris Party Championship II
PDF, PDF
Evans 1015
Erik Herrera Intermediate I - Mathematical Cake Cutting
Cheit C230
Quan Lam Intermediate II - Modular Arithmetic, Fermat Little Theorem, Diophantine Equations, Counting
PDF
Cheit C220
Laura Pierson Advanced - Counting Trees and Parking Cars
PDF
Online
Instructor Topic Room
Harry Main-Luu Beginners I - Tetris Party Championship III
PDF, PDF
Online
Harry Main-Luu Beginners II - Tetris Party Championship III
PDF, PDF
Evans 1015
Quan Lam Intermediate I - Modular Arithmetic, Divisibility & Applications, Curious Numbers
PDF
Cheit C230
Erik Herrera Intermediate II - Mathematical Cake Cutting
Cheit C220
Daniel Rostamloo Advanced - Group Theory
Online
Instructor Topic Room
Bernt Wahl Beginners I - Exploring Fractals
Online
Bernt Wahl Beginners II - Exploring Fractals
Evans 1015
Quan Lam Intermediate I - Modular Arithmetic, Divisibility & Applications, Curious Numbers
Cheit C230
Sebastian Weinberger Intermediate II - Bayes' Theorem
PDF
Cheit C220
Daniel Rostamloo Advanced - Group Theory II
PDF
Online
Instructor Topic Room
Cody Strouse Beginners I - Math Kangaroo!
Online
Cody Strouse Beginners II - Math Kangaroo!
Evans 1015
Sarah Firestone Intermediate I - Trigonometric Ratios
PDF, PDF
Cheit C230
Sebastian Weinberger Intermediate II - Bayes' Theorem II
PDF
Cheit C220
Milo Moses Advanced - Finite Fields
Online
Instructor Topic Room
Patricio Angulo Beginners I - The Math of Chemistry: Building Molecules & Their Geometric Shapes (VSEPR Theory) I
Online
Patricio Angulo Beginners II - The Math of Chemistry: Building Molecules & Their Geometric Shapes (VSEPR Theory) I
Evans 1015
Sarah Firestone Intermediate I - Trigonometry and the Unit Circle
PDF
Cheit C230
Paul Zeitz Intermediate II - More Number Theory and Counting
PDF
Cheit C220
Kyle Devereaux Advanced - A Look at Quantum Mechanics
PDF, PDF
Online
Instructor Topic Room
Patricio Angulo Beginners I - The Math of Chemistry: Building Molecules & Their Geometric Shapes (VSEPR Theory) II
Online
Patricio Angulo Beginners II - The Math of Chemistry: Building Molecules & Their Geometric Shapes (VSEPR Theory) II
Evans 1015
Sarah Firestone Intermediate I - Modeling with Trigonometric Functions
PDF
Cheit C230
Paul Zeitz Intermediate II - More Number Theory and Counting
PDF
Cheit C220
Sebastian Weinberger Advanced - Bayes' Theorem
Online
Instructor Topic Room
Selena Ding Beginners I - DNA: Sequence and Topology
Online
Ryan Quan Beginners II - Morphological Measurements
Evans 1015
Harry Main-Luu Intermediate I - Tetris Party Championship
PDF, PDF
Cheit C230
Paul Zeitz Intermediate II - More Number Theory and Counting
PDF
Cheit C220
Arkady Vaintrob Advanced - Comparing Infinities
PDF
Online
Instructor Topic Room
Selena Ding Beginners I - DNA: Sequence and Topology
Online
Ryan Quan Beginners II - Morphological Measurements
Evans 1015
Harry Main-Luu Intermediate I - Tetris Party Championship
PDF, PDF
Cheit C230
Paul Zeitz Intermediate II - More Number Theory and Counting
PDF
Cheit C220
Arkady Vaintrob Advanced - Comparing Infinities
PDF
Online
Instructor Topic Room
Selena Ding Beginners I - DNA: Sequence and Topology
Online
Ryan Quan Beginners II - Morphological Measurements
Evans 1015
Harry Main-Luu Intermediate I - Tetris Party Championship
PDF
Cheit C230
Roy Zhao Intermediate II - Invariants and Monovariants
Cheit C220
Paul Zeitz Advanced - Gauss Sums
PDF
Online
Instructor Topic Room
Harry Main-Luu Beginners I - Polygon Decompositions I
PDF
Online
Sarah Firestone Beginners II - Quadratics and Area
Evans 1015
Bernt Wahl Intermediate I - Exploring Fractals
Cheit C230
Roy Zhao Intermediate II - Invariants and Monovariants
Cheit C220
Paul Zeitz Advanced - Gauss Sums
Online
Instructor Topic Room
Harry Main-Luu Beginners I - Polygon Decompositions II
PDF
Online
Sarah Firestone Beginners II - Quadratics and Area
Evans 1015
Erik Herrera Intermediate I - Lattice Polygons and Pick's Theorem
Cheit C230
Intermediate II - None

AMC 10/12B in person

In person
Advanced - None

AMC 10/12B in person

In person
Instructor Topic Room
Harry Main-Luu Beginners I - Polygon Decompositions III
Online
Harry Main-Luu Beginners II - Taxicab Geometry I
Evans 1015
Peter Koroteev Intermediate I - Partitions III
Cheit C230
Bernt Wahl Intermediate II - Exploring Fractals
Cheit C220
Roy Zhao Advanced - Hat Problems I
PDF, PDF
Online
Instructor Topic Room
Harry Main-Luu Beginners I - Polygon Decompositions IV
Online
Harry Main-Luu Beginners II - Taxicab Geometry II
Evans 1015
Peter Koroteev Intermediate I - Fractals
PDF
Cheit C230
Erik Herrera Intermediate II - Lattice Polygons and Pick's Theorem
Cheit C220
Roy Zhao Advanced - Hat Problems II
PDF
Online
Instructor Topic Room
Michael Hutching BMC-Upper Colloquium 
PDF

Dec 11, Sunday, 3-4PM

Speaker: Professor Michael Hutching

Chair of the Mathematics Department

UC Berkeley

 

Title: The mathematics of Rubik's cube

Abstract: We will discuss the group theory related to Rubik's cube. By the end of this talk you should be able to solve Rubik's cube, possibly taking a while, but understanding every step. The same ideas can also be used to solve other similar puzzles (larger cubes, other polyhedra, etc.). You are encouraged to bring a cube to experiment with if you have one, and we will also have some cubes available.

 

VLSB 2050
Instructor Topic Room
Patricio Angulo Beginners I - Math Kangaroo I: Continued Explorations in The Art of Problem Solving
PDF
Online
Beginners II - NO REGULAR SESSIONS

AMC8 for Grades 8 and below in Cheit C230

Cheit C230
Intermediate I - NO REGULAR SESSIONS

AMC8 for Grades 8 and below in Cheit C230

Cheit C230
Paul Zeitz Intermediate II - Probability I
PDF
Cheit C220
Laura Pierson Advanced - Coloring Problems
Online
Instructor Topic Room
Patricio Angulo Beginners I - Math Kangaroo II: Continued Explorations in The Art of Problem Solving
PDF
Online
Patricio Angulo Beginners II - Math Kangaroo II: Continued Explorations in The Art of Problem Solving
PDF
Evans 1015
Harry Main-Luu Intermediate I - A Dart Game - from Geometry to Probability
Cheit C230
Paul Zeitz Intermediate II - Probability II
PDF
Cheit C220
Laura Pierson Advanced - Coloring Problems
Online
Instructor Topic Room
Patricio Angulo Beginners I - The Math of Chemistry: Chemical Reactions & Equilibrium I
PDF
Online
Patricio Angulo Beginners II - The Math of Chemistry: Chemical Reactions & Equilibrium I
PDF
Evans 1015
Harry Main-Luu Intermediate I - A Dart Game - from Geometry to Probability II
Cheit C230
Paul Zeitz Intermediate II - Probability III
PDF
Cheit C220
Arkady Vaintrob Advanced - Quadratic Irrationalities
PDF
Online
Instructor Topic Room
Patricio Angulo Beginners I - The Math of Chemistry: Chemical Reactions & Equilibrium I
PDF
Online
Patricio Angulo Beginners II - The Math of Chemistry: Chemical Reactions & Equilibrium I
PDF
Evans 1015
Harry Main-Luu Intermediate I - A Dart Game - from Geometry to Probability III
Cheit C230
Paul Zeitz Intermediate II - Probability IV
PDF
Cheit C220
Arkady Vaintrob Advanced - Quadratic Irrationalities
PDF
Online
Instructor Topic Room
Selena Ding Beginners I - Genetics: Meiosis
PDF
Online
Harry Main-Luu Beginners II - A Dart Game - from Geometry to Probability
Evans 1015
Zvezda Stankova Intermediate I - BAMO Prep
PDF, PDF, PDF
Cheit C230
Peter Koroteev Intermediate II - Partitions
Cheit C220
Zili Wang Advanced - How Neural Networks Learn
PDF
Online
Instructor Topic Room
Selena Ding Beginners I - Genetics: Meiosis
PDF
Online
Harry Main-Luu Beginners II - A Dart Game - from Geometry to Probability II
Evans 1015
Aaron Agulnick Intermediate I - BAMO Prep II
PDF, PDF, PDF
Cheit C230
Peter Koroteev Intermediate II - Partitions II
Cheit C220
Lingfu Zhang Advanced - A Collection of Problems and BAMO Preparation
PDF
Online
Instructor Topic Room
Beginners I - No Regular Sessions

Bay Area Math Olympiad

Cheit Hall C230

See left box
Beginners II - No Regular Sessions

Bay Area Math Olympiad

Cheit Hall C230

See left box
Intermediate I - No Regular Sessions

Bay Area Math Olympiad

Cheit Hall C230

See left box
Intermediate II - No Regular Sessions

Bay Area Math Olympiad

Cheit Hall C230

See left box
Advanced - No Regular Sessions

Bay Area Math Olympiad

Cheit Hall C230

See left box
Instructor Topic Room
Selena Ding Beginners I - Errors in Heuristics
PDF
Online
Harry Main-Luu Beginners II - A Dart Game - from Geometry to Probability III
Evans 1015
Ryan Quan Intermediate I - Morphological Measurements
Cheit C230
Pratima Karpe Intermediate II - Isometries in a plane and shortest path
Cheit C220
Elysee Wilson-Egolf Advanced - Square Dance
PDF
Online
Instructor Topic Room
Roy Zhao Beginners I - Invariant Games I
PDF
Online
Roy Zhao Beginners II - Invariant Games I
PDF
Evans 1015
Ryan Quan Intermediate I - Morphological Measurements II
Cheit C230
Pratima Karpe Intermediate II - Isometries in a plane and shortest path
Cheit C220
Elysee Wilson-Egolf Advanced - Sneaky Segments
Online
Instructor Topic Room
Roy Zhao Beginners I - Invariant Games II
PDF
Online
Roy Zhao Beginners II - Invariant Games II
PDF
Evans 1015
Alex Saltman Intermediate I - Geometric Transformations I
Cheit C230
Aaron Agulnick Intermediate II - Rings and Unique Factorization
Cheit C220
Espen Slettnes Advanced - αχ ≥ |V|
PDF
Online
Instructor Topic Room
Ryan Quan Beginners I - Blood Vessel Math
Online
Zvezda Stankova Beginners II - BAMO Aftermath
PDF
Evans 1015
Roy Zhao Intermediate I - Pile Splitting Games I
PDF
Cheit C230
Aaron Agulnick Intermediate II - Gaussian Integers
Cheit C220
Daniel Rostamloo Advanced - Introduction to Algebraic Topology
Online
Instructor Topic Room
Harry Main-Luu Beginners I - Taxicab Geometry
Online
Harry Main-Luu Beginners II - A Dart Game Part IV
PDF
Evans 1015
Roy Zhao Intermediate I - Pile Splitting Games II
PDF
Cheit C230
Cody Strouse Intermediate II - To Infinity and Beyond!
Cheit C220
Daniel Rostamloo Advanced - Introduction to Algebraic Topology
Online
Instructor Topic Room
Elysee Wilson-Egolf Beginners I - Problems from Smullyan
PDF
Online
Zvezda Stankova Beginners II - BAMO Aftermath
PDF
Evans 1015
Roy Zhao Intermediate I - Pile Splitting Games III
PDF
Cheit C230
Cody Strouse Intermediate II - To Infinity and Beyond! II
Cheit C220
Harry Main-Luu Advanced - Breaking Math at Infinity - Axiom Systems and Paradoxes
Online
Instructor Topic Room
Elysee Wilson-Egolf Beginners I - Problems from Smullyan II
PDF
Online
Zvezda Stankova Beginners II - BAMO Aftermath
PDF
Evans 1015
Harry Main-Luu Intermediate I - A Dart Game - from Geometry to Probability
PDF
Cheit C230
Chris Overton Intermediate II - Flexagons (and their transition graphs)
PDF
Cheit C220
Paul Zeitz Advanced - Lattice points and number theory
PDF
Online
Instructor Topic Room
Elysee Wilson-Egolf Beginners I - Problems from Smullyan III
PDF
Online
Sarah Firestone Beginners II - Information and Number Systems
PDF, PDF
Evans 1015
Harry Main-Luu Intermediate I - A Dart Game - from Geometry to Probability
PDF
Cheit C230
Chris Overton Intermediate II - Flexagons (and their transition graphs)
PDF
Cheit C220
Paul Zeitz Advanced - Lattice points and number theory
Online
Instructor Topic Room
Espen Slettnes BMC-Upper Colloquium

 

Title: Magical Proofs

 

Abstract: Through gaining experience in math research and olympiads, one develops a sense for how to generally approach different types of problems, building a repertoire of problem-solving tricks and techniques that can be used to tackle them. Then there are *those* problems — the ones that defy the rules of composition that most other problems are subject to, whose solutions seem to stretch the limits of what’s possible. This talk is a tribute to these magical problems, demonstrating how these seemingly impossible puzzles can transform into feats of ingenuity.

 

Speaker Bio: Espen Slettnes joined the Berkeley Math Circle in Spring 2012, where in more recent years, he has served as an instructor for the Advanced Group and as a grader, problem writer, and coordinator for the proof-based monthly contests. He earned a gold award at the 2022 USA Mathematical Olympiad (USAMO) and attended the national Mathematical Olympiad Program (MOP) twice. Espen is a published math researcher who began his research journey in 6th grade; the following year he started interning at the MIT PRIMES-USA research program for several years, completing various individual and group projects in combinatorics. He received the Spirit of Ramanujan Fellowship thrice in 2018, 2019, and 2020. His work has been recognized by the Broadcom MASTERS national science fair, the Shing-Tung Yau High School Science Award, Davidson Fellows, the MAA Outstanding Presentation Award at the Joint Mathematics Meetings (JMM), etc. In recognition of his achievements, minor planet 34379, discovered by MIT Lincoln Laboratory in 2000, was named “Slettnes" in his honor.

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