Fri, 01 Apr 2011 17:20:56 +0200 hoelzl remove unnecessary prob_preserving
Fri, 01 Apr 2011 17:20:33 +0200 hoelzl add prob_space_vimage
Fri, 01 Apr 2011 17:16:08 +0200 wenzelm use Unsynchronized.change convenience, which also emphasizes the raw access to these references (which happen to be local here);
Fri, 01 Apr 2011 16:29:58 +0200 krauss fixed accidental redefinition
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