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- Ward Appeltans, Shane T. Ahyong, +118 authors Mark J. Costello
- Current Biology
- 2012

BACKGROUND
The question of how many marine species exist is important because it provides a metric for how much we do and do not know about life in the oceans. We have compiled the first register of the marine species of the world and used this baseline to estimate how many more species, partitioned among all major eukaryotic groups, may be discovered.
… (More)

- Amos Altshuler, Jürgen Bokowski, Peter Schuchert
- J. Comb. Theory, Ser. A
- 1996

- Jürgen Bokowski, Peter Schuchert
- Discrete & Computational Geometry
- 1995

- Jürgen Bokowski, Peter Schuchert
- SIAM J. Discrete Math.
- 1995

- David Forge, Michel Las Vergnas, Peter Schuchert
- Eur. J. Comb.
- 2001

Using oriented matroids, and with the help of a computer, we have found a set of 10 points in R 4 not projectively equivalent to the vertices of a convex polytope. This result confirms a conjecture of Larman [6] in dimension 4. PROBLEM (McMullen [6]). Determine the largest integer n = f (d) such that for any given n points in general position in R d there… (More)

We provide a complete list of 59 orientable neighborly 2-manifolds with 12 vertices of genus 6, and we study their possible flat embeddings in Euclidean 3-space. Whereas the question of embeddability remains open in its general form, we obtain several properties of the embedding (polyhedral realization) under the assumption that it does exist: 1. The order… (More)

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