31st Conference on the Mathematical Foundations of Programming Semantics

June 22 - 25, 2015

CALCO 2015

 6th International Conference on Algebra and Coalgebra in Computer Science

 June 24 - 26, 2015


In cooperation with ACM SIGLOG

 Nijmegen, Netherlands

Early registration deadline:    June 14, 2015


MFPS conferences are devoted to those areas of mathematics, logic, and computer science that are related to models of computation, in general, and to the semantics of programming languages, in particular. The series has particularly stressed providing a forum where researchers in mathematics and computer science can meet and exchange ideas about problems of common interest. As the series also strives to maintain breadth in its scope, the conference strongly encourages participation by researchers in neighbouring areas.

CALCO aims to bring together researchers and practitioners with interests in foundational aspects, and both traditional and emerging uses of algebra and coalgebra in computer science. It is a high-level, bi-annual conference formed by joining the forces and reputations of CMCS (the International Workshop on Coalgebraic Methods in Computer Science), and WADT (the Workshop on Algebraic Development Techniques). Previous CALCO editions took place in Swansea (Wales, 2005), Bergen (Norway, 2007), Udine (Italy, 2009), Winchester (UK, 2011) and Warsaw (Poland, 2013).


Invited speaker of MFPS and CALCO

  • Andy Pitts - University of Cambridge, UK

MFPS invited speakers

  • Thierry Coquand - Chalmers University of Technology, Sweden
  • Paul B. Levy - University of Birmingham, UK
  • Sam Staton - Radboud University, Nijmegen, NL

CALCO invited speakers

  • Chris Heunen - University of Oxford, UK
  • Matteo Mio - CNRS, ENS Lyon, FR
  • Daniela Petrisan - Radboud University, Nijmegen, NL


The detailed programme will appear soon on the (MFPS)[] and (CALCO)[] web sites.

MFPS Special Sessions

MFPS will host four special sessions:

  • Game semantics, organised by Andrzej Murawski, Warwick
  • Concurrent separation logic, organised by Philippa Gardner, Imperial College
  • Nominal techniques, organised by Daniela Petrisan, Radboud
  • Algebraic effects, organised by Matija Pretnar, Ljubljana

The special session will include an invited tutorial talk, delivered by the session organiser.

CALCO Early Ideas workshop

CALCO 2015 will run together with the CALCO Early Ideas Workshop, with dedicated Early Ideas sessions at the end of each conference day. Additional information is available at .


To register for MFPS/CALCO, please fill out the registration form available at:


The following registration Fees are applied (Normal // Late).

  • Both MFPS and Calco
      * Non-Students        €230 // €250   * Students          €160 // €180
  • MFPS only or Calco only
      * Non-Students        €160 // €180   * Students          €100 // €120

SIGLOG members attending MFPS and/or Calco receive a discount on the registration fee: €20 for student members, and €30 for professional members. The yearly rate for SIGLOG membership is $15 for students, and $25 for professionals.

The deadline for normal registration is Sunday, June 14. After this date, the late registration fee will be applied. The registration fee can be paid by bank transfer or by credit card (Visa or Mastercard). Payment by bank transfer is strongly encouraged. Within the SEPA area, bank transfers are free of change.

We will be sponsoring 5 free student registrations. Anyone interested please contact We are also proud to be a family-friendly conference: any participant who requires support for childcare to be able to attend the conference should contact us.

Additional information on registration and hotel information can be found at .


Nijmegen is the oldest city in the Netherlands and celebrated its 2,000th year of existence in 2005. It is situated in the eastern province of Gelderland, quite near to the German border. The latin name for Nsijmegen, *Noviomagus, is a reminder of its Roman past. Noviomagu means *new market and refers to the right to hold a market as granted by the Romans. In the days of Charlemagne, the city was called Numaga; later on, this became Nieumeghen and Nimmegen. However, citizens born and bred in Nijmegen speak affectionately of Nimwegen.

Nijmegen is one of the warmest cities of the Netherlands, especially during summer, when the highest temperatures in the country are usually measured in the triangle Roermond – Nijmegen – Eindhoven. The lack of north-south oriented mountain ranges in Europe make this area prone to sudden shifts in weather, giving the region a semi-continental climate.

Conference venue for MFPS/CALCO is the majestic Art Cinema Lux, located in the city center of Nijmegen.

SIGLOG Anti-harassment Policy

The open exchange of ideas and the freedom of thought and expression are central to the values and goals of SIGLOG. They require an environment that recognizes the inherent worth of every person and group. They flourish in communities that foster mutual understanding and embrace diversity. For these reasons, SIGLOG is committed to providing a harassment-free conference experience, and implements the ACM policy against harassment.

Conference participants violating these standards may be sanctioned or expelled from the meeting, at the discretion of the conference organizers. Conference organizers are requested to report serious incidents to the SIGLOG Chair.