Algebraic Topology - download pdf or read online

By P. Hoffman, R. Piccinini, D. Sjerve

ISBN-10: 3540089306

ISBN-13: 9783540089308

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3 1) as a topologicaldefinition of chaos in onedimensional noninvertible maps. 3 1). Amapf : I - + l : 0 0 0 Has sensitivity to initial conditions if 36 > 0 such that for all 2 E I and any interval J 3 2,there is a y E J and an n > 0 such that If " ( 5 )- f"(y)l > 6 . Is topologically transitive if for each pair of open sets A , B C I , there exists n such that f " ( A ) n B # 0. Is mixing if for each pair of open sets A , B c I , there exists No > 0 such that n > NO + f " ( A )n B # 0. A mixing map is obviously topologically transitive.

Two additional stable period-5 orbits (besides I+,) were located in simulations. Their locations are shown in Fig. 45. One was also located experimentally. The other may also have been seen, but its basin was too small to be certain of its existence. Bifurcation diagrams had been observed for a variety of physical systems at that time: other lasers [25,26]; electric circuits [27-301; a biological model [3 I]; and a bouncing ball 1321. Their bifurcation diagrams are similar but not identical to those shown above.

8. 12 lNTRODUCTlON During this transition the underlying branched manifold is robust: It generally does not change. Large changes in control parameter values can cause changes in the underlying branched manifold. These changes occur by adding branches to or removing branches from the branched manifold. The branch changes that are allowed are also limited by topological and continuity arguments. The information required for this doubly discrete classification of strange attractors can be extracted from experimental data.

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Algebraic Topology by P. Hoffman, R. Piccinini, D. Sjerve


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