Combinatorics / CONCEPT
First-Block Order
The leading value controls the first occurrences in a four-pattern avoider.
Closed
DIRECT PREREQUISITES1
DIRECT CONSEQUENCES1
PROOF DEPTH4
DOCUMENT LINKS1
Order imposed by the first letter
RELATIONSHIP ATLAS
Every connection, in context.
Direct recorded relationships
Proof dependencyStructural affinityDocument link
Certified topology / UPSTREAM
Prerequisites
Certified topology / DOWNSTREAM
Consequences
RELATED KNOWLEDGE
Structural connections
- A Large Initial Letterstructural-affinity · Closed
- Deletion of the Least Valuestructural-affinity · Closed
- Insertion into Increasing-Order Avoidersstructural-affinity · Closed
- Removing the Doubled Largest Prefixstructural-affinity · Closed
- Separated Value Cutsstructural-affinity · Closed
- Structure with Increasing First Occurrencesstructural-affinity · Closed
- Three-Letter Order Restrictionsstructural-affinity · Closed
- Unique Primitive Increasing Wordstructural-affinity · Closed
Documents & exposition
Other authored & advisory relationships
None recorded in this release.
LIBRARY / RELEASE VERSIONS
Content history
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