The Chebfun team is pleased to announce the release of Chebfun v5.6.0 for numerical computing with functions in 1D, 2D, and 3D. Here are some noteworthy features.
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DISKFUN for functions on the unit disk. See Chebfun Guide, chap. 16, http://www.chebfun.org/docs/guide/guide16.html.
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GALLERYSPHERE collection of functions on the unit sphere See Chebfun Guide, chap. 17, http://www.chebfun.org/docs/guide/guide17.html.
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TRIGRATINTERP and TRIGREMEZ for rational interpolation/ least-squares and best approximation of periodic functions.
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AAA for rational approximation on real or complex domains, based on greedy construction of rational barycentric fractions. See http://www.chebfun.org/examples/approx/AAAApprox.html.
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ADJOINT for computing the adjoint of a chebop. See
help chebop/adjoint. -
CHEBFUN2/EIG for eigenvalues of a chebfun2 on a square domain, interpreted as the kernel of an integral operator.
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Improvements to SPIN/SPIN2/SPIN3 for stiff PDEs, and some changes in syntax. See Chebfun Guide, chap. 19 and examples in http://www.chebfun.org/examples/pde.
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New capabilities for composing chebfun/chebfun2/chebfun3 objects. See http://www.chebfun.org/examples/opt/ConstrainedExtrema.html.
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Updated list of about 50 Chebfun publications at http://www.chebfun.org/publications/.
We hope you enjoy the new release. If you have questions or comments, we encourage you to post to the Chebfun users group, https://groups.google.com/forum/#!forum/chebfun-users.