Notes
Learning and reference notes on mathematics and science.
October 10, 2026
Numerical Analysis
Interpolation, root-finding, linear systems, and ODEs
numerical analysismath
October 3, 2026
Introductory Spherical Trigonometry
spherical trigonometrymath
September 20, 2026
Abstract Algebra and Ring Theory
In this notes, cosets, Lagrange, homomorphisms, normal subgroups, quotient groups, automorphisms, conjugacy; rings, ideals, prime/maximal ideals, ring homs, field of quotients, polynomial rings.
abstract algebragroup theoryring theorymath