15 lines
395 B
Factor
15 lines
395 B
Factor
! Copyright (C) 2006 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: laplacian
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USING: arrays hopf kernel namespaces sequences topology ;
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! Some words for computing the Hodge star map (*), and the
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! Laplacian.
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: (star) ( term -- term )
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generators get [ swap member? not ] subset-with
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1 swap (odd*) h* ;
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: star ( x -- *x )
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>h [ first (star) ] linear-op ;
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