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| truncate https://www.singular.uni-kl.de/forum/viewtopic.php?f=10&t=1649 |
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| Author: | riccardo [ Mon Oct 08, 2007 3:27 pm ] |
| Post subject: | truncate |
Given a map, is it possible to extract a map with only low order terms? If I have: ring r = real,(x,y,z),dp; map f=r,x3+x2+x3y+4; I want to get for instance x2+4 Thanks, Riccardo |
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| Author: | hannes [ Tue Oct 16, 2007 8:11 pm ] |
| Post subject: | Re: truncate |
Yes, jet provides this functionality: ring r = real,(x,y,z),dp; map f=r,x3+x2+x3y+4; jet(ideal(f),2); -> _[1]=x2+4.000e+00 and to a map again: map ff=r,jet(ideal(f),2); |
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