Mittagsseminar (in cooperation with A. Steger, D. Steurer and B. Sudakov)

Date and Time: Tuesday, November 23, 2004, 12:15 pm

Duration: This information is not available in the database

Location: This information is not available in the database

Speaker: Leo Rüst

Ladders

Some problems (e.g. the generalized linear complementarity problem) can be mapped to a unique sink orientation (USO) of a grid such that the solution to the problem corresponds to the unique sink of the grid. We are interested in the expected number of vertices a randomized algorithm needs to evaluate until it finds the sink, where a vertex evaluation returns the orientation of all incident edges.

In this talk, the focus will be on small grid-USOs and mainly on 2xn-grids, which we call "n-ladders". The hope is that the analysis of algorithms on ladders will yield new ideas for the general grid case.

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