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Pictures and videos from the Gödel Centenary Fellowship are online here.

There’s a very interesting issue of Erkenntnis just out. It’s the proceedings of PhiPMSAP 1. PhiMSAP is the Network on Philosophy of Mathematics: Sociological Aspects and Mathematical Practice of the DFG, run mostly by Benedikt Löwe and Thomas Müller, the third workshop of which I just had the pleasure of attending. Contents of the issue:…

The first issue of the Review of Symbolic Logic will be out soon (Cambridge UP page here). The Review, like the Journal and Bulletin of Symbolic Logic will be mailed to all members of the Association for Symbolic Logic. So if you’re not a member (and you probably should be, if you’re reading this!), join…

Last week, Brian Leiter posted about possibly re-drawing the dividing lines between the specialty areas ranked in the Philosophical Gourmet Report In a comment, Cian asks: Philosophical Logic and Mathematical Logic. While there is a fair amount of divergence between the two rankings, I also see, for example, that NYU gets ranked at 4.5 in…

What more do we know about a theorem if we have a proof (by restricted means) than merely that it is true? That’s an old question of Kreisel’s that motivated his “unwinding program”: extract additional information from proofs of theorems in constructive theories, such as bounds on y in theorems of the form ∀x∃y A(x,…

From my colleague up north, Rob Wilson: The What Sorts of People blog is now up and running: check it out. This is the blog for the What Sorts of People Should There Be? network, a collaborative blog with regular contributions from around 10 team members. Short, recent posts are available on double-amputee Oscar Pistorius’s…

Rob Loftis has a roundup of open access introductory logic textbooks. And Hans von Ditmarsch has a list of logic course software.

It was only a matter of time.

You probably all know the result that Peano Arithmetic is not finitely axiomatizable (a result due to Ryll-Nardzewski), and a similar result for ZFC (due to Richard Montague, I believe). The standard axiom system for PA is not finite since the axiom scheme of induction stands for infinitely many sentences. Ryll-Nardzewski showed that there is…

So the colloquium honoring the recipients of the Gödel Research Fellowships is tomorrow. There should be a live feed. It starts at 9:00 CDT (that’s midnight tonight on the West Coast, and 3 am Eastern). I’ll try to find out if the lectures will be archived.