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AISB opportunities Bulletin Item

PhD student position in SAT solving, Stockholm, SWEDEN

The TCS Group at KTH Royal Institute of Technology invites applications 
for a PhD position in computer science focused on SAT solving.

KTH Royal Institute of Technology is the leading technical university in 
Sweden. The Theoretical Computer Science Group at KTH ( 
offers a strong research environment spanning a wide range of research 
topics such as complexity theory and approximation algorithms, computer 
and network security, cryptography, formal methods and natural language 
processing. We have one of Europe's most prominent groups in algorithms 
and complexity theory, and the research conducted here has attracted 
numerous international awards and grants in recent years.

The PhD student will be working in the research group of Jakob Nordstrom. 
Much of the activities of this research group revolve around the themes of 
efficient algorithms for satisfiability in propositional logic (SAT 
solving) and lower bounds on the efficiency of methods for reasoning about 
SAT (proof complexity). On the practical side, one problem of interest is 
to gain a better understanding of, and improve, the performance of current 
state-of-the-art SAT solvers --- in particular, solvers using 
conflict-driven clause learning (CDCL). We are even more interested in 
exploring new techniques that hold out the theoretical possibility of 
exponential improvements over CDCL, but seem hard to implement efficiently 
in practice, e.g., algebraic methods such as Groebner bases or geometric 
methods such as pseudo-Boolean solving (basically 0/1 integer linear 

The research project is financed by a Breakthrough Research Grant and a 
Consolidator Grant from the Swedish Research Council and a Starting 
Independent Researcher Grant from the European Research Council. A more 
detailed description of the project can be found at The group currently consists of 
two postdoctoral researchers and four PhD students (in addition to the 
PI). There are also several other professors, postdocs, and PhD students 
in the TCS Group working on other aspects of algorithms and computational 
complexity, and so this is a unique opportunity to explore new connections 
between theoretical and practical areas of computer science within a 
vibrant and growing research environment.

This is a four-year full-time employed position, but PhD positions usually 
(though not necessarily) include 20% teaching, in which case they are 
prolonged for one more year. The successful candidate is expected to start 
at the latest in August-September 2017, although this is to some extent 
negotiable. The position is fully funded and comes with a competitive 

The application deadline is March 31, 2017. See for the full 
announcement with more information and instructions how to apply. Informal 
enquiries are welcome and may be sent to . Please note that 
this is an additional announcement on top of the PhD position D-2016-0833 
due to additional research funding. Candidates who already applied for the 
position D-2016-0833 should not apply again --- all applicants for both 
announcements are evaluated in parallel.