The irreducible characters of Sp(2m) at every power of Kostant's element: when they vanish, their value as a signed ratio of root products, and their absolute value as a product of dimensions of GL, Sp and odd SO representations.
Zeros of the weighted sums Σn≤m nε(n) of completely multiplicative ε with values ±1: every admissible length is a zero of some ε, infinitely many zeros are rare in measure and generic in category, and for quadratic characters the zeros are explicit.
Inside the second inversion stage of the free field of the free group of rank three, two chains of subrings are strict at every step and infinitely many stopping steps of the Dubrovin–Gräter–Hanke series occur; the tool is a sufficient criterion for non-membership.
Each numbered result of a paper is one tile and one node of its map, copied verbatim
with the paper's numbering. Its colour says what checked it besides the written proof; the map says which results its
proof uses.
✅ formalized in Lean
◐ a part in Lean
💻 checked by a program
written proof only
One version, one site
Each site follows the version named on its card and carries that PDF; its Lean links
point to a fixed commit.