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**Model of student migration**

Original source (Postscript-File): J. Scheurle, R. Seydel: A Model of Student Migration. to appear in Int. J. Bifurcation and Chaos

Two fixed points are

and

They are connected by a bifurcation with

It is easy to show that the fixed point with *y*_{2}=0 is stable for

This defines a threshold value
of the number
of entering freshmen, such that for
the option 2 has no students.
The bound is not touched for

Figure 1

Phase-diagram of the
(*y*_{1}^{j}, *y*_{2}^{j})-values for
*j*=0,1,...,40,
,
*a*=0.002.

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Figure 1