DPFO2023: The Decision Problem in First-Order Logic Boston University Boston, MS, United States, June 24-25, 2023 |

Submission link | https://easychair.org/conferences/?conf=dpfo2023 |

Submission deadline | April 3, 2023 |

Nearly a century has now passed since D. Hilbert and W. Ackermann asked if there an algorithm which, when given a formula of first-order logic, determines whether that formula is satisfiable. The negative answer provided by A. Church and A. Turing only a decade later transformed this question into a classification programme: for *which fragments* of first-order logic, we ask, is the problem of determining the satisfiability of a given formula decidable? Can we chart, in the words of W.V.O. Quine, the *limits of decision* in first-order logic? Indeed, logicians now typically set themselves a more ambitious goal: given a fragment of first order logic, if its satisfiability (and/or its finite satisfiability problem) is decidable, what is its computational complexity?

From early work on quantifier-prefix fragments, the study of the satisfiability problem (and finite satisfiability problem) for fragments of first-order logic, and indeed of its non-first-order extensions,has now become a central topic in Computational Logic. The aim of the workshop, affiliated with LICS 2023, is to highlight recent developments in this area, with particular emphasis on those fragments which have been the focus of recent interest. These include, for example,

- Modal and description logics
- Logics for ontology-based data access
- The negation-guarded fragment
- The fluted fragment
- Separation logics
- Logics of dependence and independence
- Combinations of existing fragments.

For more details, see DPFO2023 workshop website.

## Submission Guidelines

We invite contributions in the form of 30-minute talks on any topic covered by the workshop title (not confined to the list above). Those interested in giving a contributed talk should submit a short abstract of no more than 2 normally spaced A4/letter pages via Easychair.

**Important dates:**

- Deadline for submission of abstracts:
**April 3rd, 2023** - Final decision by organizers and notification:
**April 14th, 2023**

**Invited speakers:**

- TBA (see workshop website)

## Committees

### Program Committee

- TBA (see workshop website)

### Organizing committee

- Ian Pratt-Hartmann (University of Manchester/Opole University)
- Sebastian Rudolph (Technische Universität Dresden),
- Frank Wolter (University of Liverpool)

## Contact

All questions about submissions should be emailed to Ian Pratt-Hartmann.