Mathematics
Foundations, rebuilt formula by formula.
A working surface for mathematics: settled computational material organized as reference, with the places where the convenient school-level statement papers over something rigor will later care about flagged in the open rather than left buried.
Why this section exists
Mathematics is the one place where I want the foundations rebuilt deliberately rather than half-remembered. This section collects that rebuilding: not lecture notes, but stable references I can return to, each one honest about its own conditions and its own gaps.
Material is grouped by area, from foundations upward. Each entry carries a maturity label — a quiet marker of how settled it is — so a quick lookup is never mistaken for a finished treatment.