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“We consider an Individual Based model of evolution. Species emergence as segregation of the population on to discrete positions in a hyper cubical genotype space. The model emphasises interaction between coexisting genotypes. Although the rate of the micro dynamics, consisting of reproduction and killing of individuals, is essentially constant; the macro dynamics is punctuated. The macro evolution consists of the creation and annihilation of configurations in genotype space equivalent to sequences of different eco systems.
“We review the definition of the model and results concerning distribution of lifetimes of individuals, genotypes and configurations. We discuss the non stationarity of the model and how this agrees with the fossil record. Finally we describe how the model is able to produce species abundance distributions and species area relationships of a form qualitatively in agreement with observation on real eco systems.”
The Archimedeans' Triennial Dinner will comprise a formal three course meal followed by coffee, with speeches by two guest speakers. Tickets will initially go on sale at £26 for drinking, and £22 for non-drinking tickets, although this price will rise to £28/£24 on the 29th of January.
Please send cheques made payable to the Archimedeans to the President, Peyman Owladi (Trinity), with your name, college, drinking or non-drinking preference, and any dietary requirements written on the back.
The Bookshop will be open this term on Tuesday evenings from 1930 to 2100 weekly from 25th January to 1st March inclusive. The Bargain Basement still has some books for just £2 each, so don't miss out by delaying! An online catalogue is available.
(Please note that the Bookshop is a service for members only.)
Issue 13 of QARCH, a problems journal published by the Archimedeans, is available online.
Society members who want wonderfully laminated membership cards in place of their old ones should contact the President. The small fee of 20p will be charged to cover costs.
Navigation: <Archimedeans’ homepage> <Newsletters index> <Graphical version>