On Tue, 21 Aug 2012 Sam Buss submitted an update to the
bussproofs
package.
Summary description: Proof trees in the style of the sequent calculus and other systems. License type: lppl
Announcement text: ----------------------------------------------------------------------
New features from previous CTAN version: - Inferences with four or five hypotheses supported. - One bug big. - Peter Smith's documentation now included in CTAN distribution.
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This package is located at http://mirror.ctan.org/macros/latex/contrib/bussproofs . More information is at http://www.ctan.org/pkg/bussproofs (if the package is new it may take a day for that information to appear). We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .
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Thanks for the upload.
For the CTAN Team Rainer Schöpf