Welcome to Lagmental
I write on my blog when I feel like it, because apparently having opinions in private was not enough.
Most of what I write here is for my own memory: notes, explanations, experiments, and things I may want to revisit later. So don't expect anything particularly new or novel; most of this is meant to help my future self remember things rather than to contribute new knowledge. If someone else finds any of it useful too, that's a pleasant side effect.
There is also a not me page if you want to know who is responsible for all this.
Newest posts
- Sun 30 August 2026 - A Tree Center Is One Vertex or One Edge
- Mon 17 August 2026 - Euler's Pentagonal Theorem Expands the Partition Denominator
- Fri 08 May 2026 - The Jacobian Criterion Detects Smooth Complete Intersections - updated: Mon 10 August 2026
- Sat 08 August 2026 - Artin--Schreier Extensions Are Additive
- Sun 25 June 2023 - Poisson Brackets Differentiate Observables along Hamiltonian Flow - updated: Wed 05 August 2026
Random posts
- Tue 14 May 2013 - Artinian Rings Have Krull Dimension Zero - updated: Tue 13 July 2021
- Sun 03 February 2013 - Line Bundles Form the Picard Group
- Wed 28 December 2011 - Carmichael's Function Gives the Exponent of the Unit Group
- Tue 03 April 2012 - Fibre Products of Affine Schemes Are Tensor Products
- Thu 09 July 2009 - Going Up Lifts Chains of Prime Ideals