“School of Physics”
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Paper IPM / P / 8772  


Abstract:  
We de�ne a simple model for studying a special type of disease that one of
the two infected people will die after coming into contact with eachother. Naturally, if
two people are separated by a large distance, the chances that they come into contact
is smaller than if they are closer, and the probability of a disease being transferred
from one to the other is also smaller. It means we have a network with preferential
merging. We will see that this network is a scalefree with exponent equal to 1.5.
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