𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Stabbing Simplices by Points and Flats

✍ Scribed by Boris Bukh; Jiří Matoušek; Gabriel Nivasch


Publisher
Springer
Year
2008
Tongue
English
Weight
567 KB
Volume
43
Category
Article
ISSN
0179-5376

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


On the number of flats spanned by a set
✍ Endre Boros; Roy Meshulam 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 116 KB

It is shown that for fixed 1 ~ 0, if X C PG (d, q) contains (1 + ~)q~ points, then the number of r-fiats spanned by X is at least C(r.)q (r+l)ts+l-r), i.e. a positive fraction of the number of r-fiats in PG(s + 1,q).

Flatness and smooth points of p-adic sub
✍ Zachary Robinson 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 482 KB

We give a new proof of the suhanalyticity of the regular locus of a p-adic suhanalytic set, replacing use of an approximation theorem by a more natural argument based on the flatness of certain homomorphisms given by Taylor expansions of strictly convergent power series at a non-standard point of ZT

Partitions of Points into Simplices with
✍ Jean-Pierre Roudneff 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 236 KB

A longstanding conjecture of Reay asserts that every set X of (m-1)(d +1)+k+1 points in general position in R d has a partition X 1 , X 2 , . . . , X m such that m i=1 conv X i is at least k-dimensional. Using the tools developed in [13] and oriented matroid theory, we prove this conjecture for d =