From: Christian Bauer Date: Thu, 5 Apr 2001 00:39:51 +0000 (+0000) Subject: documentation update X-Git-Tag: release_0-8-1~31 X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=commitdiff_plain;h=828d660d98835773b239c1f8cde58841068ad9b4 documentation update --- diff --git a/NEWS b/NEWS index d68d427b..2283ab90 100644 --- a/NEWS +++ b/NEWS @@ -2,15 +2,16 @@ This file records noteworthy changes. 0.8.1 () * degree(), ldegree(), coeff(), lcoeff(), tcoeff() and collect() can now - be used with constants and indexed expressions as well, so you can use - it to collect by powers of Pi or find the coefficient of gamma~0. + be used with constants, functions and indexed expressions as well, so you + can use it to collect by powers of Pi or sin(x), or to find the coefficient + of gamma~0. Limitations: - - it only works with symbols, constants and indexed expressions; + - it only works with symbols, constants, functions and indexed expressions; trying to find the coefficient of, e.g., "x^2" or "x+y" won't work - it does not know about dummy index summations; the coefficient of gamma~0 in p.mu*gamma~mu should be p.0 but is returned as 0 - - using the functions on elements of noncommutative products might - return wrong or surprising results + - using coeff(), tcoeff(), lcoeff() or collect() on elements of + noncommutative products might return wrong or surprising results * Added preliminary (re)implementations of color and clifford classes. * simplify_indexed(): contraction of symmetric and antisymmetric tensors is zero.