Judah and Shelah [3] proved that countable support iterations of proper forcings preserve the ω-bounding property (see 2.2 here). In his book Proper and Improper Forcing [8, XVIII §3] Shelah gave several cases of general preservation theorems for proper countable support iterations (the proofs tend to be hard to digest, though). In this paper we deal with “Case A”. A simplified version of this ...

A new wave of meta-analyses suggests that antidepressants are no better than placebo for major depressive disorder (MDD), and therefore, antidepressants not only don't work, but even worse, they harm patients because of the risk of adverse effects. The authors analyzed data from all antidepressant studies submitted to the Food and Drug Administration for registration (including failed studies w...

Assembly planning is the core of automating product assembly, maintenance, and recycling for modern industrial manufacturing. Despite its importance long history research, mechanical assemblies when given final assembled state remains a challenging problem. This due to complexity dealing with arbitrary 3D shapes highly constrained motion required real-world assemblies. In this work, we propose ...