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Lower bound related to couples of disjoint two-element sets

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#combinatorics #extremal-combinatorics
67
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Lower bound for the size of some families of subsets of $[2n+1]$ of size $n$

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#combinatorics #extremal-combinatorics
52
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Set system containing no chain with $k+1$ sets

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#real-analysis #combinatorics #graph-theory #solution-verification #extremal-combinatorics
53
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Dividing a hyper-sphere ( of dimension $n$) into $N$ equal measure of bounded diameter

Published on
#combinatorics #geometry #graph-theory #spheres #extremal-combinatorics
71
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Prove the minimum size of a separating union-closed family of sets is equal to the size of its universe

Published on
#conjectures #extremal-combinatorics
43
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Combinatorial Problem based (indirectly) on Generalized Pigeonhole Principle

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#combinatorics #discrete-mathematics #extremal-combinatorics
64
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An upper bound on the size of antichain

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#combinatorics #extremal-combinatorics
259
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Large family of subsets with small pairwise intersections

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#combinatorics #extremal-combinatorics
107
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Set system containing no chain of length $3$

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#combinatorics #analysis #solution-verification #extremal-combinatorics
58
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proving an inequality for combinatorial sum

Published on
#combinatorics #inequality #graph-theory #extremal-combinatorics
346
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Decrease list difference via swaps

Published on
#combinatorics #algorithms #extremal-combinatorics
198
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Disjoints subsets of a multilabeled set

Published on
#combinatorics #graph-theory #coloring #extremal-combinatorics
102
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Distinguishable subsets of the 52-card blackjack deck

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#combinatorics #combinations #card-games #extremal-combinatorics
68
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If a graph has exponentially many maximal cliques, what can we say about how many maximal cliques each vertex belongs to?

Published on
#combinatorics #graph-theory #extremal-combinatorics
83
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Farther and nearest points from an ellipse to the a line segment.

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#geometry #analysis #education #extremal-combinatorics #hausdorff-distance

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