# Hyperbolicity

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Hyperbolicity (resp., the adjective hyperbolic) is an extremely overloaded notion used in different contexts. Here follows a partial list of possible disambiguations.

• Hyperbolic partial differential equations
• Hyperbolic dynamical systems
• Hyperbolic functions \$\sinh,\cosh,\tanh\$
• Hyperbolic surfaces (in differential geometry)
How to Cite This Entry:
Hyperbolicity. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Hyperbolicity&oldid=26035