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Combinatorics / CONCEPT

Actual lattice-word extremal descent obligation

Define the original finite carrier for Shankar's 321-avoiding lattice words, its strict descent fiber, explicit candidate extremizers, and an all-parameter even construction. The all-k maximum and fiber-cardinality law remains unproved.

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Actual even words at the proposed descent level

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Actual lattice-word extremal descent obligationActual lattice-word extremaldescent obligationOdd lattice-word constructionOdd lattice-word construction
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Lean sourceResearch workspace
Status
Closed
Depth
0
Layer
D5/S3
Domain
Combinatorics
Node ID
D5/S3/Combinatorics/ShankarWords/ActualWordExtremal
Repository path
D5/S3/Combinatorics/ShankarWords/ActualWordExtremal.lean
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sha256:76a8db6a0f78609b1b9d4a959c8392f2752f2daaddc1930e046e34ce07d0f608
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b52262a023c4db9bb30a128ebfd80ea4ef4c1a53
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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.