Jakob Nordström

Jakob Nordström

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    ORCID: 0000-0002-2700-4285

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    1. A (biased) proof complexity survey for SAT practitioners

      Nordström, Jakob, 2014, Theory and Applications of Satisfiability Testing, SAT 2014 - 17th International Conference, Held as Part of theVienna Summer of Logic, VSL 2014, Proceedings. Springer Verlag, p. 1-6 6 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 8561 LNCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    2. Published

      A Cardinal Improvement to Pseudo-Boolean Solving

      Elffers, J. & Nordström, Jakob, 1 Feb 2020, Proceedings of the 34th AAAI Conference on Artificial Intelligence (AAAI '20). AAAI Press, p. 1495-1503 9 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    3. Published

      A Space Hierarchy for $k$-DNF Resolution

      Ben-Sasson, E. & Nordström, Jakob, 1 Apr 2009.

      Research output: Working paper › Research

    4. A generalized method for proving polynomial calculus degree lower bounds

      Mikša, M. & Nordström, Jakob, 1 Jun 2015, 30th Conference on Computational Complexity, CCC 2015. Zuckerman, D. (ed.). Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, p. 467-487 21 p. (Leibniz International Proceedings in Informatics, LIPIcs, Vol. 33).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    5. Published

      A simplified way of proving trade-off results for resolution

      Nordström, Jakob, 31 Aug 2009, In: Information Processing Letters. 109, 18, p. 1030-1035 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    6. Published

      Adding Dual Variables to Algebraic Reasoning for Gate-Level Multiplier Verification

      Kaufmann, D., Beame, P., Biere, A. & Nordström, Jakob, 2022, Proceedings of the 2022 Design, Automation and Test in Europe Conference and Exhibition, DATE 2022. Bolchini, C., Verbauwhede, I. & Vatajelu, I. (eds.). IEEE, p. 1431-1436 6 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    7. Published

      An Auditable Constraint Programming Solver

      Gocht, S., McCreesh, C. & Nordström, Jakob, 2022, 28th International Conference on Principles and Practice of Constraint Programming, CP 2022. Solnon, C. (ed.). Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, 25. (Leibniz International Proceedings in Informatics, LIPIcs, Vol. 235).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    8. Published

      Automating Algebraic Proof Systems is NP-Hard

      de Rezende, S. F., Göös, M., Nordström, Jakob, Pitassi, T., Robere, R. & Sokolov, D., 1 May 2020, Electronic Colloquium on Computational Complexity, 34 p.

      Research output: Working paper › Research

    9. Published

      Automating algebraic proof systems is NP-hard

      De Rezende, S. F., Göös, M., Nordström, Jakob, Pitassi, T., Robere, R. & Sokolov, D., 2021, STOC 2021 - Proceedings of the 53rd Annual ACM SIGACT Symposium on Theory of Computing. Khuller, S. & Williams, V. V. (eds.). Association for Computing Machinery, Inc., p. 209-222

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    10. CNFgen: A generator of crafted benchmarks

      Lauria, M., Elffers, J., Nordström, Jakob & Vinyals, M., 2017, Theory and Applications of Satisfiability Testing – SAT 2017 - 20th International Conference, Proceedings. Gaspers, S. & Walsh, T. (eds.). Springer Verlag, p. 464-473 10 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 10491 LNCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    11. Published

      Certified CNF Translations for Pseudo-Boolean Solving

      Gocht, S., Martins, R., Nordström, Jakob & Oertel, A., 2022, 25th International Conference on Theory and Applications of Satisfiability Testing, SAT 2022. Meel, K. S. & Strichman, O. (eds.). Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, 16. (Leibniz International Proceedings in Informatics, LIPIcs, Vol. 236).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    12. E-pub ahead of print

      Certified Core-Guided MaxSAT Solving

      Berg, J., Bogaerts, B., Nordström, Jakob, Oertel, A. & Vandesande, D., 2023, (E-pub ahead of print) Automated Deduction – CADE 29 - 29th International Conference on Automated Deduction, Proceedings. Pientka, B. & Tinelli, C. (eds.). Springer Science and Business Media Deutschland GmbH, p. 1-22 22 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 14132 LNAI).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    13. Published

      Certifying Solvers for Clique and Maximum Common (Connected) Subgraph Problems

      Gocht, S., McBride, R., McCreesh, C., Nordström, Jakob, Prosser, P. & Trimble, J., 2020, Principles and Practice of Constraint Programming: 26th International Conference, CP 2020, Proceedings. Simonis, H. (ed.). Springer, p. 338-357 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 12333 LNCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    14. Clique is hard on average for regular resolution

      Atserias, A., Lauria, M., Bonacina, I., Nordström, Jakob, De Rezende, S. F. & Razborov, A., 20 Jun 2018, STOC 2018 - Proceedings of the 50th Annual ACM SIGACT Symposium on Theory of Computing. Henzinger, M., Kempe, D. & Diakonikolas, I. (eds.). ACM Association for Computing Machinery, p. 646-659 14 p. (Proceedings of the Annual ACM Symposium on Theory of Computing).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    15. Cumulative space in black-white pebbling and resolution

      Alwen, J., De Rezende, S. F., Nordström, Jakob & Vinyals, M., 1 Nov 2017, 8th Innovations in Theoretical Computer Science Conference, ITCS 2017. Papadimitriou, C. H. (ed.). Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, (Leibniz International Proceedings in Informatics, LIPIcs, Vol. 67).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    16. Divide and conquer: Towards faster pseudo-boolean solving

      Elffers, J. & Nordström, Jakob, 2018, Proceedings of the 27th International Joint Conference on Artificial Intelligence, IJCAI 2018. Lang, J. (ed.). International Joint Conferences on Artificial Intelligence, p. 1291-1299 9 p. (IJCAI International Joint Conference on Artificial Intelligence, Vol. 2018-July).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    17. Published

      Exponential resolution lower bounds for weak pigeonhole principle and perfect matching formulas over sparse graphs

      de Rezende, S. F., Nordström, Jakob, Risse, K. & Sokolov, D., 1 Jul 2020, 35th Computational Complexity Conference, CCC 2020. Saraf, S. (ed.). Schloss Dagstuhl - Leibniz-Zentrum für Informatik, p. 1-24 28. (Leibniz International Proceedings in Informatics, LIPIcs, Vol. 169).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    18. From small space to small width in resolution

      Filmus, Y., Lauria, M., Mikša, M., Nordström, Jakob & Vinyals, M., 1 Mar 2014, 31st International Symposium on Theoretical Aspects of Computer Science, STACS 2014. Portier, N. & Mayr, E. W. (eds.). Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, Vol. 25. p. 300-311 12 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    19. From small space to small width in resolution

      Filmus, Y., Lauria, M., Mikša, M., Nordström, Jakob & Vinyals, M., 1 Aug 2015, In: ACM Transactions on Computational Logic. 16, 4, 28.

      Research output: Contribution to journal › Journal article › Research › peer-review

    20. Published

      Graph Colouring Is Hard on Average for Polynomial Calculus and Nullstellensatz

      Conneryd, J., de Rezende, S. F., Nordström, Jakob, Pang, Shuo & Risse, K., 2023, Proceedings - 2023 IEEE 64th Annual Symposium on Foundations of Computer Science, FOCS 2023. IEEE Computer Society Press, 11 p. 45. (Proceedings - Annual IEEE Symposium on Foundations of Computer Science, FOCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    21. Graph colouring is hard for algorithms based on hilbert's nullstellensatz and gröbner bases

      Lauria, M. & Nordström, Jakob, 1 Jul 2017, 32nd Computational Complexity Conference, CCC 2017. O'Donnell, R. (ed.). Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, 2. (Leibniz International Proceedings in Informatics, LIPIcs, Vol. 79).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    22. Hardness of Approximation in PSPACE and Separation Results for Pebble Games (Extended Abstract)

      Chan, S. M., Lauria, M., Nordström, Jakob & Vinyals, M., 1 Oct 2015, Proceedings of the 56th Annual IEEE Symposium on Foundations of Computer Science (FOCS~'15). IEEE, p. 466-485 20 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    23. In between resolution and cutting planes: A study of proof systems for pseudo-boolean SAT solving

      Vinyals, M., Elffers, J., Giráldez-Cru, J., Gocht, S. & Nordström, Jakob, 2018, Theory and Applications of Satisfiability Testing – SAT 2018 - 21st International Conference, SAT 2018, Held as Part of the Federated Logic Conference, FloC 2018, Proceedings. Beyersdorff, O. & Wintersteiger, C. M. (eds.). Springer Verlag, p. 292-310 19 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 10929 LNCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    24. Published

      Justifying All Differences Using Pseudo-Boolean Reasoning

      Elffers, J., Gocht, S., McCreesh, C. & Nordström, Jakob, 1 Feb 2020, Proceedings of the 34th AAAI Conference on Artificial Intelligence (AAAI '20). AAAI Press, p. 1486-1494 9 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    25. Published

      KRW Composition Theorems via Lifting

      de Rezende, S., Meir, O., Nordström, Jakob, Pitassi, T. & Robere, R., 1 Nov 2020, Proceedings of the 61st Annual IEEE Symposium on Foundations of Computer Science (FOCS '20). IEEE, p. 4149

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    26. Published

      Learn to Relax: Integrating 0-1 Integer Linear Programming with Pseudo-Boolean Conflict-Driven Search

      Devriendt, J., Gleixner, A. & Nordström, Jakob, 2021, In: Constraints. 26, p. 26–55 30 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    27. Published

      Lifting with Simple Gadgets and Applications to Circuit and Proof Complexity

      de Rezende, S. F., Meir, O., Nordström, Jakob, Pitassi, T., Robere, R. & Vinyals, M., 1 Nov 2020, Proceedings of the 61st Annual IEEE Symposium on Foundations of Computer Science (FOCS '20). IEEE, p. 24-30

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    28. Long Proofs of (Seemingly) Simple Formulas

      Mikša, M. & Nordström, Jakob, 2014, Theory and Applications of Satisfiability Testing, SAT 2014 - 17th International Conference, Held as Part of theVienna Summer of Logic, VSL 2014, Proceedings. Springer Verlag, p. 121-137 17 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 8561 LNCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    29. Narrow proofs may be maximally long

      Atserias, A., Lauria, M. & Nordström, Jakob, Feb 2016, In: ACM Transactions on Computational Logic. 17, 3, 19.

      Research output: Contribution to journal › Journal article › Research › peer-review

    30. Narrow proofs may be maximally long

      Atserias, A., Lauria, M. & Nordström, Jakob, 2014, Proceedings - IEEE 29th Conference on Computational Complexity, CCC 2014. IEEE Computer Society Press, p. 286-297 12 p. 6875497. (Proceedings of the Annual IEEE Conference on Computational Complexity).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    31. Published

      Narrow proofs may be spacious: Separating space and width in resolution

      Nordström, Jakob, 2009, In: SIAM Journal on Computing. 39, 1, p. 59-121 63 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    32. Published

      Narrow proofs may be spacious: Separating space and width in resolution

      Nordström, Jakob, 2006, STOC'06: Proceedings of the 38th Annual ACM Symposium on Theory of Computing. p. 507-516 10 p. (Proceedings of the Annual ACM Symposium on Theory of Computing, Vol. 2006).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    33. Near-Optimal Lower Bounds on Quantifier Depth and Weisfeiler - Leman Refinement Steps

      Berkholz, C. & Nordström, Jakob, 5 Jul 2016, Proceedings of the 31st Annual ACM-IEEE Symposium on Logic in Computer Science, LICS 2016. Institute of Electrical and Electronics Engineers Inc., p. 267-276 10 p. (Proceedings - Symposium on Logic in Computer Science, Vol. 05-08-July-2016).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    34. Published

      Near-optimal Lower Bounds on Quantifier Depth and Weisfeiler-Leman Refinement Steps

      Berkholz, C. & Nordström, Jakob, 2023, In: Journal of the ACM. 70, 5, p. 1-32 32.

      Research output: Contribution to journal › Journal article › Research › peer-review

    35. Published

      Nullstellensatz Size-Degree Trade-offs from Reversible Pebbling

      de Rezende, S. F., Nordström, Jakob, Meir, O. & Robere, R., 2019, 34th Computational Complexity Conference (CCC 2019), Proceedings. Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, Vol. 137. p. 1-16 18. (Leibniz International Proceedings in Informatics, LIPIcs, Vol. 137).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    36. Published

      On division versus saturation in pseudo-boolean solving

      Gocht, S., Nordström, Jakob & Yehudayoff, A., 2019, Proceedings of the 28th International Joint Conference on Artificial Intelligence, IJCAI 2019. Kraus, S. (ed.). International Joint Conferences on Artificial Intelligence, p. 1711-1718

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    37. Published

      On minimal unsatisfiability and time-space trade-offs for k-DNF resolution

      Nordström, Jakob & Razborov, A., 2011, Automata, Languages and Programming - 38th International Colloquium, ICALP 2011, Proceedings. PART 1 ed. p. 642-653 12 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); No. PART 1, Vol. 6755 LNCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    38. On the Interplay Between Proof Complexity and SAT Solving

      Nordström, Jakob, 1 Jul 2015, In: ACM SIGLOG News. 2, 3, p. 19-44 26 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    39. On the Virtue of Succinct Proofs: Amplifying Communication Complexity Hardness to Time-Space Trade-offs in Proof Complexity (Extended Abstract)

      Huynh, T. & Nordström, Jakob, 1 May 2012, Proceedings of the 44th Annual ACM Symposium on Theory of Computing (STOC '12). Association for Computing Machinery, Inc., p. 233-248 16 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    40. On the relative strength of pebbling and resolution

      Nordström, Jakob, Apr 2012, In: ACM Transactions on Computational Logic. 13, 2, a16.

      Research output: Contribution to journal › Journal article › Research › peer-review

    41. Published

      On the relative strength of pebbling and resolution

      Nordström, Jakob, 2010, Proceedings - 25th Annual IEEE Conference on Computational Complexity, CCC 2010. p. 151-162 12 p. 5497889. (Proceedings of the Annual IEEE Conference on Computational Complexity).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    42. Pebble games, proof complexity, and time-space trade-offs

      Nordström, Jakob, 13 Sep 2013, In: Logical Methods in Computer Science. 9, 3, 15.

      Research output: Contribution to journal › Journal article › Research › peer-review

    43. Published

      Proof Complexity and SAT Solving

      Buss, S. & Nordström, Jakob, 2021, Handbook of Satisfiability. Biere, A., Heule, M. J. H., van Maaren, H. & Walsh, T. (eds.). 2 ed. IMIA and IOS Press, p. 233 - 350 (Frontiers in Artificial Intelligence and Applications, Vol. 336).

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

    44. Relating proof complexity measures and practical hardness of SAT

      Järvisalo, M., Matsliah, A., Nordström, Jakob & Živný, S., 2012, Principles and Practice of Constraint Programming - 18th International Conference, CP 2012, Proceedings. p. 316-331 16 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 7514 LNCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    45. Seeking practical CDCL insights from theoretical SAT benchmarks

      Elffers, J., Cru, J. G., Gocht, S., Nordström, Jakob & Simon, L., 2018, Proceedings of the 27th International Joint Conference on Artificial Intelligence, IJCAI 2018. Lang, J. (ed.). International Joint Conferences on Artificial Intelligence, p. 1300-1308 9 p. (IJCAI International Joint Conference on Artificial Intelligence, Vol. 2018-July).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    46. Published

      Separations of Matroid Freeness Properties

      Bhattacharyya, A., Grigorescu, E., Nordström, Jakob & Xie, N., 1 Aug 2010.

      Research output: Working paper › Research

    47. Published

      Short Proofs May Be Spacious: Understanding Space in Resolution

      Nordström, Jakob, 1 May 2008

      Research output: Book/Report › Report › Research › peer-review

    48. Published

      Short proofs may be spacious: An optimal separation of space and length in resolution

      Ben-Sasson, E. & Nordström, Jakob, 2008, Proceedings of the 49th Annual IEEE Symposium on Foundations of Computer Science, FOCS 2008. p. 709-718 10 p. 4691003. (Proceedings - Annual IEEE Symposium on Foundations of Computer Science, FOCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    49. Published

      Simplified and Improved Separations Between Regular and General Resolution by Lifting

      Vinyals, M., Elffers, J., Johannsen, J. & Nordström, Jakob, 2020, Theory and Applications of Satisfiability Testing – SAT 2020 - 23rd International Conference, Proceedings. Pulina, L. & Seidl, M. (eds.). Springer, p. 182-200 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 12178 LNCS).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

    50. Some trade-off results for polynomial calculus

      Beck, C., Nordström, Jakob & Tang, B., 2013, STOC 2013 - Proceedings of the 2013 ACM Symposium on Theory of Computing. p. 813-822 10 p. (Proceedings of the Annual ACM Symposium on Theory of Computing).

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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