Tuesday, June 17, 2025

Intuitionistic Modal Logic: are you sure?

 I was always very keen on the idea that philosophical logicians and programming language designers interested in non-classical modal logics should talk to each other about their problems, about what kinds of  intuitionistic or constructive modal logics they would like to have and  why. 

Their goals are clearly different, but there is a large overlap in the mathematical contents of their common subject and because the communities largely ignore each other, they do not even know the basic results of the other `side' of the field.

 Because of this issue of people talking past each other I invested lots of effort into organizing IMLA (Intuitionistic Modal Logics and Applications), short meetings organized as workshops associated to bigger events like LiCS or FLoC or ESSLLI. The last IMLA happened in Toulouse in 2017. The picture below is the top of the  website, which I  lost when google sites decided to upgrade itself and trash out the old sites. I found the call for papers here.

Thank goodness there are proceedings of most, if not all, of the IMLA workshops:

• Fairtlough, Mendler, Moggi, Modalities in Type Theory (eds.), MSCS, (2001)
• de Paiva, Gore´, Mendler (eds), Modalities in constructive logics and type theories,  J of Log and Comp (2004)
• de Paiva, Pientka (eds.) IMLA 2008, Inf. Comput. (2011)
• de Paiva, Benevides, Nigam, Pimentel (eds.), IMLA 2013, ENTCS300, (2014)
• Alechina, de Paiva (eds.) IMLA2011, J. of Log and Comp, (2015)
• de Paiva, Artemov, Intuitionistic Modal Logic 2017, IfColog  Journal of Applied Logics, 2021.

 The IMLA meetings with respective invited speakers:

• FLoC1999, Trento, Italy, (Pfenning)
• FLoC2002, Copenhagen, Denmark, (Scott and Sambin)
LiCS2005, Chicago, USA, (Walker, Venema and Tait)
• LiCS2008, Pittsburgh, USA, (Pfenning, Brauner)
• 14th LMPS in Nancy, France, 2011 (Mendler, Logan, Strassburger, Pereira)
UNILOG 2013, Rio de Janeiro, Brazil. (Gurevich, Vigano and Bellin)
ESSLLI2017, Toulouse, France (no special speaker)

 

 
 

Saturday, June 7, 2025

Oh dear: my webpage in Bham is gone!


 I have been an Honorary Fellow at the School of Computer Science in the University of Birmingham, UK since 2000. I am still officially one  until 2028 and have an official letter saying it. But the University re-organized its website and I have not been able to get my webpage to resurface at all. The problem with this state of affairs is that many of my papers stopped  being available, which is a real heartache for me!

So this adds another item to the long list of boring tasks that I need to do. Some time. Soon. Much more important is to prepare my slides for the Oregon Programming Languages Summer School 2025. This is coming up real soon, so I should be doing my work, instead of writing blog posts. But I do feel very tired and jet lagged, as we came back from the UK the day before yesterday, so still waking up at 3 am and feeling wiped out at 4 pm.

But before I turn into a pumpkin, I will add here a photo from the book that Katerina, Tracy, Steve and Annie produce for Dick -- his Festschrift: "Semantics at the Crossroads: From Theoretical Explorations to Implementations." I am really proud of the book and of his work, and a tiny, little bit jealous, to tell the truth.



escrift