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Virtual package libsingular-dev is provided by:

Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                   Version         Architecture
+++-======================-===============-====================================                                                   
ii  libsingular4-dev:amd64 1:4.3.1-p3+ds-2 amd64        Computer Algebra System for Polynomial Computations -- development package

1 packages