trureturingGitHub MATHEMATICAL ATLAS

Combinatorics / CONCEPT

The Terminal Difference of the Derangement Triangle

For every natural n at least five, the difference T(n,n-2)-T(n,n) for derangements avoiding a cycle length is (n-3)!(n-4)(n-1)/2.

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Cycle factors and cycle type

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The Terminal Difference of the Derangement TriangleThe Terminal Difference of theDerangement TriangleA Counterexample to the Literal Adjacent DifferenceA Counterexample to the LiteralAdjacent Difference
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Lean sourceResearch workspace
Status
Closed
Depth
0
Layer
D5/S3
Domain
Combinatorics
Node ID
D5/S3/Combinatorics/Derangements/TerminalDifference
Repository path
D5/S3/Combinatorics/Derangements/TerminalDifference.lean
Truth release
sha256:76a8db6a0f78609b1b9d4a959c8392f2752f2daaddc1930e046e34ce07d0f608
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b52262a023c4db9bb30a128ebfd80ea4ef4c1a53
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37a24ddf3b9983bdabf0acbfd9b32b06c35c28d3

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