PDF-Derangements

n23 n brPage 8br 1 brPage 9br. Cameron Queen Mary University of London Pretty Structures Paris May 2011 Abstract These are notes from my lectures at the Pretty Structures conference at the Institut Henri Poincar e in Paris in early May 2011 I had planned to give three talks Question How many derangements of a set of items are there The number of derangements of objects can be cal culated recursively But determining the recursive formula is tricky so here it is in full First a list consisting of only one item cannot be Anthony Fraticelli. Missouri State University REU July 30, 2009. Advisor: Dr. Les Reid. Overview. In this presentation we will address the following:. Introductory definitions . Classic derangements. An Alternative Form of Inclusion-Exclusion. Example 1: . How many solutions does . . x. 1. + x. 2. +x. 3. =11. have ,where x. 1. , x. 2. , x. 3. are nonnegative integers with . x. 1.  . An Alternative Form of Inclusion-Exclusion. Example 1: . How many solutions does . . x. 1. + x. 2. +x. 3. =11. have ,where x. 1. , x. 2. , x. 3. are nonnegative integers with . x. 1.  . ABSTRACT NUMBER : 120. Diaphyseal femur fractures are mostly the result of high energy trauma . . . . Femoral shaft fractures are often associated with . bony and soft tissue injuries . to the ipsilateral knee, and a high index of suspicion is necessary to identify these . Exposure: Leg pain on walking, outcome: knee pain. Exposure: knee pain, outcome: . M15 . Polyarthrosis. Exposure: . M15 . Polyarthrosis. . , outcome: knee pain. Exposure: knee pain, outcome: . other specific joint derangements.