Proves β(F) ≤ 2^{n-4} for any IU-family F and a tight upper bound on sums of sizes of cross t-intersecting separated families, with counterexamples settling a prior open problem negatively.
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Two results on set families: sturdiness and intersection
Proves β(F) ≤ 2^{n-4} for any IU-family F and a tight upper bound on sums of sizes of cross t-intersecting separated families, with counterexamples settling a prior open problem negatively.