Thursday, December 18, 2025

The Phase Transition in Random Graphs: A Simple Proof

›
 
Wednesday, December 3, 2025

CV - Mihai Caragiu (12/3/2025)

›
            m-caragiu.1@onu.edu Office: 419-772-2352   February 7, 2026   BIOGRAPHY 8/11 - present: Professor of M...
Tuesday, May 27, 2025

Vladimir Arnold - Hilbert 13

›
Vladimir I. Arnold     On the functions of three variables . Doklady AN USSR, 1957, 114:4, 679-681 Found it in English, among the clas...
Friday, May 9, 2025

A Deterministic Sample of Bourgain’s Work - Peter Sarnak and Avi Wigderson

›
 
Wednesday, March 19, 2025

Diagonalization chalkboards (lecture March 19)

›
   
Monday, February 10, 2025

A short classroom exercise on partially ordered sets

›
 
Saturday, January 11, 2025

Noncommutative probability for computer scientists - Adam Marcus

›
 
Tuesday, December 17, 2024

Quanta Magazine: The Year in Math

›
"Landmark results in geometry and number theory marked an exciting year for mathematics, at a time when advances in artificial intelli...
Tuesday, December 3, 2024

Maze generation with Kruskal's algorithm

›
 
Tuesday, October 29, 2024

Flurries of Ducci waves

›
https://ssmr.ro/bulletin/pdf/66-2/articol_4.pdf    
Saturday, October 19, 2024

On the Liouville function at polynomial arguments - Joni Teräväinen

›
 
Sunday, September 22, 2024

Integer partitions detect the primes

›
A remarkable new paper: Integer partitions detect the primes , by William Craig, Jan-Willem van Ittersum, Ken Ono https://arxiv.org/abs/240...
Wednesday, September 18, 2024

"Model Theory (Ax's Theorem)" by Piotr Kowalski

›
 
Saturday, September 7, 2024

The Riemann Hypothesis, Explained - Quanta Magazine

›
 
Monday, July 29, 2024

The Geometric Langlands Conjecture - Sam Raskin

›
 
Thursday, June 20, 2024

Sir Timothy Gowers: What is Mathematics? with G-Research

›
 
Wednesday, June 19, 2024

The case for 'math-ish' thinking

›
The case for ‘math-ish’ thinking  May 15th, 2024 - Stanford Report In a new book, Jo Boaler argues for a more flexible, creative approach ...
Saturday, March 23, 2024

Paper on subprime tribonacci sequences

›
 " Three’s a crowd: an exploration of subprime tribonacci sequences " - College Mathematics Journal 54, No. 5, 464-475 (2023) - b...
Thursday, February 22, 2024

Iwasawa decomposition in a nutshell

›
Wednesday, February 7, 2024

130 years of mind games and quantum challenges

›
  A wonderful article by Laurie Wurth-Pressel ( source ) 130 years of mind games and quantum challenges ...
Wednesday, January 31, 2024

"Model Theory (Ax's Theorem)" by Piotr Kowalski

›
 
Tuesday, January 23, 2024

A Fall 2023 full messy chalkboard - random graphs

›
 
Friday, January 19, 2024

Quanta Magazine: 2023's Biggest Breakthroughs in Physics

›
 
Monday, January 8, 2024

Quanta Magazine: 2023's Biggest Breakthroughs in Math

›
Sunday, December 17, 2023

Florian Richter: Dynamical generalizations of the Prime Number Theorem and disjointness of additive and multiplicative actions

›
Topic: Dynamical generalizations of the Prime Number Theorem and disjointness of additive and multiplicative actions  Speaker: Florian Richt...
Monday, November 13, 2023

Ramsey Numbers asymptotics - R(4,t)

›
An amazing new result The asymptotics of r(4,t) - by Sam Mattheus and Jacques Verstraete
Tuesday, November 7, 2023

Random Graphs

›
Math circle session on random graphs led by Alon Amit at the 2012 Summer BACT
Monday, October 9, 2023

Cellular Automata: Rule 110 + Conway’s Game of Life

›
" A 1D cellular automaton, Rule 110 (bottom), being fed as input to a 2D cellular automaton, Conway’s Game of Life (top) "
Saturday, May 20, 2023

Peter Sarnak on Möbius Disjointness

›
Thursday, May 11, 2023

Senior Capstone presentations - May 10, 2023

›
Session of Senior Capstone presentations today at ONU, featuring topics on Partial Differential Equations and Number Theory. It was defin...
Monday, May 1, 2023

The Patterns in the Primes, with Andrew Granville

›
 

The Search for Randomness | Jean Bourgain

›
 
Wednesday, March 1, 2023

More teaching chalkboards

›
Chinese Remainder Theorem...
Wednesday, February 1, 2023

Number theory and cryptography class - chalkboard pictures

›
Today, the topic was the Euclidean algorithm... Just before erasing this number theoretic Tibetan mandala :)
Friday, December 16, 2022

Undergraduate research - a post pandemic restart

›
My first post-pandemic faculty-student paper and the 14-th overall (written with Rachael Harbaugh, ONU '23, a talented Mathematics E...
Friday, December 9, 2022

Senior Capstone Colloquium - Fall 2022

›
Mathematics Capstone Colloquium - December 7, 2022 @ohionorthern (from L to R: Dr. Chowdhury, Joelena Brown, Rachael Harbaugh, and Dr. Car...
Monday, November 7, 2022

Zermelo Fraenkel Choice - with Richard Borcherds

›
Thursday, November 3, 2022

An Invitation to Model Theory - by Jonathan Kirby, UEA

›
Wednesday, June 29, 2022

Mobius Randomness and Dynamics - Peter Sarnak

›
Monday, June 20, 2022

The random Fibonacci sequence and the Viswanath's constant

›
Random Fibonacci recursion  https://en.wikipedia.org/wiki/Random_Fibonacci_sequence In mathematics, the random Fibonacci seq...
Tuesday, May 31, 2022

Practice test for MATH 3701 - Complex Systems

›
 
Saturday, May 21, 2022

MATH 2651 - two applications of diagonal forms (functional calculus)

›
Spring 2022 - 8 am class!    

Wolfram Alpha

›
https://www.wolframalpha.com/   - worth trying, it's fun!
Friday, April 22, 2022

Delta... (MATH 2651 classroom stuff)

›
 
Sunday, March 27, 2022

Calculus 1 teaching - limits: Factor-Simplify-Retry

›
 
Wednesday, March 23, 2022

Abel Prize 2022: Dennis Sullivan

›
Friday, March 18, 2022

A nice application of Calculus 2

›
Via @10kdiver   Take 2 random numbers X and Y between 0 and 1. What's the probability that the integer nearest to X/Y is even?   Prove t...
Monday, February 28, 2022

Experimental math fantasy 1

›
In my classes I often try to communicate the specific sense of wonder arising from mathematical experimentation, to the benefit of undergrad...
Saturday, February 26, 2022

Trigonometric chaos - classroom fun

›
 
Friday, February 25, 2022

covid-19 era chalkboards (12)

›
That's from our Math computer lab Mathile 208 (I love that classroom!)

›
What is chaos? A complex systems scientist explains Tiny changes, like a butterfly’s wing flapping, can be amplifie...
Sunday, February 13, 2022

Opt Art: From Mathematical Optimization to Visual Design | Prof. Robert Bosch | Talks at Google

›
  Robert (Bob) Bosch - James F. Clark Professor of Mathematics at OBERLIN COLLEGE
Saturday, January 15, 2022

Paul Baum: What is K-theory and what is it good for?

›
Tuesday, January 4, 2022

The Snowflake Mystery

›
Tuesday, December 28, 2021

A great floor equation by Ramanujan

›
Tuesday, December 14, 2021

The Friendship Paradox - or "my friends have more friends than me"...

›
Monday, November 22, 2021

Charles W. Trigg - Geometric Proof of a Result of Lehmer's

›
See https://www.fq.math.ca/Scanned/11-5/trigg.pdf   - Fibonacci Quarterly Vol. 11 No. 5 (Dec. 1973)
Sunday, October 24, 2021

First group of 6 consecutive integers with exactly 6 prime factors each

›
 
Wednesday, September 1, 2021

Nonlinear Dynamics and Chaos - Steven Strogatz, Cornell University

›
https://www.youtube.com/playlist?list=PLbN57C5Zdl6j_qJA-pARJnKsmROzPnO9V This course of 25 lectures, filmed at Cornell University in Spring ...