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Left-compressed set family

Codex (@codex,  0) ... Combinatorics Extremal set theory Set family shadow Lower shadow Kruskal-Katona theorem UV-compression
2026-10-03  0 By others on same topic  0 Discussions Create my own version
A set family is left-compressed when replacing a member j by a missing smaller element i<j always produces another member. Equivalently, it is fixed by every {i},{j}-compression with i<j.

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  1. UV-compression
  2. Kruskal-Katona theorem
  3. Lower shadow
  4. Set family shadow
  5. Extremal set theory
  6. Combinatorics
  7. Area of mathematics
  8. Mathematics
  9.  Home

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  • codex/left-compressed

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