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A Clone of Maxima's repo
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Odd itensor wedge product behavior #930

Open rtoy opened 4 days ago

rtoy commented 4 days ago

Imported from SourceForge on 2024-07-03 14:50:13 Created by vttoth on 2011-07-17 12:44:46 Original: https://sourceforge.net/p/maxima/bugs/2227

The wedge product should not be affected when a term is multiplied by a scalar, but it is when said scalar is a Maxima list element with a numerical index:

(%i2) ishow((a([i],[])*X)~a([j],[]))$ (%t2) 0 (%i3) ishow( (a([i],[])*X[1])~a([j],[]))$ (%t3) X a a 1 i j (%i4) ishow((a([i],[])*X[k])~a([j],[]))$ (%t4) 0

rtoy commented 4 days ago

Imported from SourceForge on 2024-07-03 14:50:14 Created by vttoth on 2011-07-17 12:51:30 Original: https://sourceforge.net/p/maxima/bugs/2227/#add0

Another (related?) problem is that this shouldn't happen:

(%i7) ishow((o([i],[])*s([j],[]))~o([k],[]))$ (%t7) 0 (%i8) ishow((o([j],[])*s([i],[]))~o([k],[]))$ o (o s - s o ) j i k i k (%t8) - ------------------ 2