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 16 March 2021 - Chebyshev Nodes Suppress Endpoint Oscillation
- Thu 09 July 2009 - Going Up Lifts Chains of Prime Ideals
- Sat 22 November 2014 - The Matrix--Tree Theorem Uses a Laplacian Cofactor - updated: Thu 28 July 2016
- Thu 11 June 2026 - Gram--Schmidt Produces an Orthonormal Basis
- Wed 22 February 2012 - The Correspondence Theorem Organises Subgroups above a Kernel