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
Fri, 01 Apr 2011 15:49:19 +0200 boehmes save reflexivity steps in discharging Z3 Skolemization hypotheses
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