= Steven Pelikan
{c}
<Steven Pelikan> coauthored the 1984 construction of <strange nonchaotic attractors> with <Celso Grebogi>, <Edward Ott> and <James A. Yorke>. The original paper verifies the byline.<Strange attractors that are not chaotic by Celso Grebogi and others>[Title page and abstract]{ref}
Their examples separate an attractor's irregular geometry from sensitive dependence of nearby trajectories. Quasiperiodic forcing with two incommensurate frequencies can produce a geometrically strange attracting set without exponential trajectory separation. This distinction prevents a complicated-looking <attractor> from being treated as sufficient evidence of <chaos>.<Strange attractors that are not chaotic by Celso Grebogi and others>[Introduction and quasiperiodically driven examples]{ref}
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