Research notes on every problem, and a library of the papers behind them. Built from the open erdos repository.
Updated
Source notes for Problem 774
alon: Source notes for Problem 774: An application of graph theory to additive number theory.
anderson: Source notes for Problem 774: Anderson: vectors of matroids over tracts.
bzdega: Source notes for Problem 774: Bounds on ternary cyclotomic coefficients.
christie: Source notes for Problem 774: Christie–Dykema–Klep: minimal vanishing sums of roots of unity.
conway_jones: Source notes for Problem 774: Conway–Jones: trigonometric Diophantine equations and vanishing sums.
coppersmith_steinberger: Source notes for Problem 774: Coppersmith–Steinberger: entry sums of cyclotomic arrays.
dadderio_moci: Source notes for Problem 774: D'Adderio–Moci: arithmetic matroids.
duval: Source notes for Problem 774: Duval–Klivans–Martin: cuts and flows of cell complexes.
edmonds: Source notes for Problem 774: Edmonds: partitioning a matroid into independent sets.
graham_leeb_rothschild: Source notes for Problem 774: Graham–Leeb–Rothschild: Ramsey theorem for classes of partitions.
graham_rothschild: Source notes for Problem 774: Graham–Rothschild: Ramsey theorem for parameter sets.
grow: Source notes for Problem 774: Finite unions of quasi-independent sets.
hare: Source notes for Problem 774: Sidon sets are proportionally Sidon with small Sidon constants.
harrison: Source notes for Problem 774: On partitioning Sidon sets with quasi-independent sets.
hindman_strauss: Source notes for Problem 774: A simple characterization of sets satisfying the Central Sets Theorem.
karagiannis: Source notes for Problem 774: Karagiannis: a combinatorial infinite Hales–Jewett proof.
lam_leung: Source notes for Problem 774: Lam–Leung: vanishing sums of roots of unity.
lewko: Source notes for Problem 774: The Sidon Decomposition Problem in Abelian Groups of Bounded Torsion.
lovitz_petrov: Source notes for Problem 774: A generalization of Kruskal's theorem on tensor decomposition.
martin_reiner: Source notes for Problem 774: Martin–Reiner: cyclotomic and simplicial matroids.
moser_tardos: Source notes for Problem 774: A constructive proof of the general Lovasz Local Lemma.
nesetril: Source notes for Problem 774: On Pisier Type Theorems.
onn: Source notes for Problem 774: Onn: convex discrete optimization.
pisier: Source notes for Problem 774: Arithmetic characterizations of Sidon sets.
poonen_rubinstein: Source notes for Problem 774: The Number of Intersection Points Made by the Diagonals of a Regular Polygon.
promel_voigt: Source notes for Problem 774: Prömel–Voigt: canonical partition theorems for parameter sets.
ramsey_graham: Source notes for Problem 774: Ramsey–Graham: planar Sidonicity and quasi-independence.
ramsey_graham_extension: Source notes for Problem 774: Ramsey–Graham: permutation and extension.
revesz_open_problems: Source notes for Problem 774: Problèmes ouverts: Théorie analytique des polynômes et analyse harmonique.
steinberger: Source notes for Problem 774: Steinberger: low-degree nonnegative cyclotomic multiples.
tan_zhang: Source notes for Problem 774: Tan–Zhang: nonnegative cyclotomic multiples.
tao_notes: Source notes for Problem 774: 254A, Notes 1: Elementary multiplicative number theory.
voigt: Source notes for Problem 774: Voigt: canonizing partition theorems.
These notes summarize the sources used in the research. Follow the links to canonical library records for retained reading copies and bibliographic details.
Core problem sources
- pisier: equivalence between Sidonicity and proportional extraction of quasi-independent subsets.
- harrison: finite-block reduction and separated assembly.
- grow: the finite obstruction at extraction ratio one half.
- nesetril: fixed-order counterexamples and carry-free integer encoding.
- hare, lewko, alon: nearby positive results and boundary cases.
Roots-of-unity and matroid sources
- ramsey-graham: closest source; spike/shadow machinery and the explicit test cases.
- ramsey-graham-extension: coordinatewise symmetries and prime-extension results.
- martin-reiner, duval: cyclotomic/simplicial matroid dictionary and the coefficient obstruction to treating dissociation as ordinary matroid independence.
- conway-jones, lam-leung, christie, steinberger, coppersmith-steinberger, tan-zhang: short and positive vanishing sums, minimal circuits, cyclotomic arrays, and certificate methods.
- dadderio-moci, onn, anderson, edmonds: arithmetic/signed dependence, primitive integer kernel moves, and the exact matroid partition analogue.
- lovitz-petrov: splitting bounds for minimally dependent product tensors.
- poonen-rubinstein: Mann localization and recursive structure for short minimal vanishing sums.
- bzdega: coefficient bounds and jumps in ternary cyclotomic polynomials.
- hindman-strauss: central sets, idempotents, and multiplicative recurrence.
- moser-tardos: the constructive asymmetric local lemma.
- tao-notes: elementary prime-sum and Mertens estimates.
- Révész: the 2007 historical formulation of the roots-of-unity Sidon and finite quasi-independent-cover questions.
Ramsey and canonization tools
- graham-rothschild, promel-voigt, voigt, karagiannis, and graham-leeb-rothschild provide possible amplification and normalization theorems. None controls the proportional extraction constant on its own; any application must prove that side separately.
Sources checked but not held
- Canfield et al., on the asymptotic enumeration of correlation-immune Boolean functions (arXiv:0909.3321), abstract, Theorem 1.2 and Corollary 1.1: the stated real-Walsh correlation-immunity enumeration range is only of order , not the order near . Not held in the library.