Problems

Posts focused on problem-solving - could be the walkthrough of a single problem or even lists of problems.

Some derivative is zero Apr 26, 2025 problems analysis
Some problems II Feb 28, 2025 problems
Some problems I Feb 24, 2025 problems
A Wild Inequality Sep 29, 2023 problems
Polynomials With Small Coefficients Sep 24, 2023 problems exploration
Log-concavity is preserved under integration over a dimension Jan 14, 2022 problems
Duality of Evaluation on Primitive Roots Jan 12, 2022 problems
USAMO 2020 Jun 24, 2020 problems
A Greedy Inequality Apr 18, 2020 problems
Thoughts about Putnam 2019 Dec 7, 2019 problems
Dynamic Arguments Part 4 Nov 8, 2019 problems
IMO 2019 Day 1 Jul 16, 2019 problems
An Automata Problem May 25, 2019 problems
A cool inequality May 3, 2019 problems
Problem Walkthrough #2 Apr 11, 2019 problems
Problem Walkthrough #1 Apr 11, 2019 problems
Dynamic Arguments (Pt 3) Apr 8, 2019 problems
IDMO 3 Solutions Apr 8, 2019 problems solutions
Dynamic Arguments (Part 2) Apr 4, 2019 problems
Dynamic Arguments (Part 1) Apr 4, 2019 problems