trureturingGitHub MATHEMATICAL ATLAS

Combinatorics / CONCEPT

Alternating Odd Divisor Sums

A character modulo four and a hyperbola decomposition bound the alternating odd divisor sum.

Closed Authored exposition
DIRECT PREREQUISITES1
DIRECT CONSEQUENCES2
PROOF DEPTH7
DOCUMENT LINKS1
THEOREM

Square-root bound for the alternating divisor sum

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Divisor and Gauss-Product BoundsDivisor and Gauss-ProductBoundsAlternating Odd Divisor SumsAlternating Odd Divisor SumsAndrews and El Bachraoui Conjecture FourAndrews and El BachraouiConjecture FourWeighted and Parity-Restricted Divisor SumsWeighted and Parity-RestrictedDivisor Sums
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Exact release coordinate

Lean sourceResearch workspace
Status
Closed
Depth
7
Layer
D5/S3
Domain
Combinatorics
Node ID
D5/S3/Combinatorics/TwoColorPartition/AndrewsElBachraouiCharacter
Repository path
D5/S3/Combinatorics/TwoColorPartition/AndrewsElBachraouiCharacter.lean
Truth release
sha256:76a8db6a0f78609b1b9d4a959c8392f2752f2daaddc1930e046e34ce07d0f608
Source commit
b52262a023c4db9bb30a128ebfd80ea4ef4c1a53
Source tree
37a24ddf3b9983bdabf0acbfd9b32b06c35c28d3

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Dependency edges, status, and source coordinates come from the verified release and certified topology. Blueprint exposition is labeled separately. A fallback title carries no additional mathematical authority.