Opened 14 years ago

Last modified 14 years ago

#67 new bug

No weights will be given to module maps in homogeneous resolutions

Reported by: Oleksandr Owned by: hannes
Priority: critical Milestone: 3-1-1
Component: singular-kernel Version:
Keywords: res, syz, isHomog, size Cc:

Description

only mres and nres do care about "isHomog" attribute for homogeneous ideals.

nither syz nor sres nor lres set module weights!!!

something is wrong with the size of resolution (length is 1 too many than there actually are...) or conversion of resolution to list... For instance, nres seems to be somewhat defect. (length = 8!)

see attached example

Attachments (2)

attr.isHomog.res (10.0 KB) - added by Oleksandr 14 years ago.
my tests
attr.isHomog.Res2List.res (9.0 KB) - added by Oleksandr 14 years ago.
same with one explicite conversion of resolution to list

Download all attachments as: .zip

Change History (7)

Changed 14 years ago by Oleksandr

Attachment: attr.isHomog.res added

my tests

comment:1 Changed 14 years ago by Oleksandr

notice empty "weights: ( ): " and right side is not a datum, assignment ignored

comment:2 Changed 14 years ago by Oleksandr

I have tried all this only with the conversion of resolution to list, and i must say that size behaves better this way, but sometimes(e.g. from sres) one may get another trailing zero entry (size: 4 instead of 3), which is imho not a big issue...

Unfortunately: the big issue remains: no modulo-weights :(

Changed 14 years ago by Oleksandr

Attachment: attr.isHomog.Res2List.res added

same with one explicite conversion of resolution to list

comment:3 Changed 14 years ago by seelisch

Milestone: Release 3-1-0
Priority: criticalmajor
Summary: problems with resolutionsproblems with size of resolutions

comment:4 Changed 14 years ago by Oleksandr

Priority: majorcritical
Summary: problems with size of resolutionsNo weights will be given to module maps in homogeneous resolutions

comment:5 Changed 14 years ago by seelisch

Milestone: Releases 3-1-1 and higher
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