Cristian Calude

Cristian Calude
Calude in 2011
Born (1952-04-21) 21 April 1952
Galați, Romania
NationalityRomanian
Alma materUniversity of Bucharest
Known forAlgorithmic Information Theory and Quantum Theory contributions
Scientific career
FieldsMathematician
InstitutionsUniversity of Auckland, Academia Europaea
Thesis 1977
Doctoral advisorSolomon Marcus
Websitecalude.net/cristianscalude/about/

Cristian Sorin Calude (born 21 April 1952) is a New Zealand mathematician and computer scientist.[1]

Biography

After graduating from the Vasile Alecsandri National College in Galați, he studied at the University of Bucharest, where he was student of Grigore C. Moisil and Solomon Marcus.[2] Calude received his Ph.D. in Mathematics from the University of Bucharest under the direction of Solomon Marcus in 1977.[3]

He is currently chair professor at the University of Auckland,[4] New Zealand and also the founding director of the Centre for Discrete Mathematics and Theoretical Computer Science.[5] Visiting professor in many universities in Europe, North and South America, Australasia, South Africa, including Monbusho Visiting professor, JAIST, 1999 and visiting professor ENS, Paris, 2009, École Polytechnique, Paris, 2011; visiting fellow, Isaac Newton Institute for Mathematical Sciences, 2012; guest professor, Sun Yat-sen University, Guangzhou, China, 2017–2020; visiting fellow ETH Zurich, 2019. Former professor at the University of Bucharest. Calude is author or co-author of more than 270 research articles and 8 books,[6] and is cited by more than 550 authors.[7] He is known for research in algorithmic information theory, quantum computing, discrete mathematics and the history and philosophy of computation.[8]

In 2017, together with Sanjay Jain, Bakhadyr Khoussainov, Wei Li, and Frank Stephan, he announced an algorithm for deciding parity games in quasipolynomial time.[9] Their result was presented by Bakhadyr Khoussainov at the Symposium on Theory of Computing 2017[10] and won a Best Paper Award.[11]

Calude was awarded the National Order of Faithful Service in the degree of Knight[12] by the President of Romania, Klaus Iohannis, in June 2019.

In 2021, together with Sanjay Jain, Bakhadyr Khoussainov, Wei Li, and Frank Stephan, he won the EATCS Nerode Prize[13] for their quasipolynomial time algorithm for deciding parity games.

Distinctions and prizes

Selected bibliography

Articles

  • Calude, Cristian S.; Svozil, Karl (2024). "Binary Quantum Random Number Generator Based on Value Indefinite Observables". Scientific Reports. 14. doi:10.1038/s41598-024-62566-2. ISSN 2045-2322. PMC 11150379.
  • Agüero Trejo, José Manuel; Calude, Cristian S. (2023). "Photonic ternary quantum random number generators". Proc. R. Soc. A. 479 (2273). doi:10.1098/rspa.2022.0543.
  • Calude, Cristian S.; Heidar, Shahrokh; Sifakis, Joseph (2023). "What perceptron neural networks are (not) good for?". Information Sciences. 621: IS–844–IS-188. doi:10.1016/j.ins.2022.11.083.
  • Calude, Cristian S.; Jain, Sanjay; Khoussainov, Bakhadyr; Li, Wei; Stephan, Frank (2022). "Deciding Parity Games in Quasi-polynomial Time". SIAM Journal on Computing. 51 (2): STOC17–152–STOC17-188. doi:10.1137/17M1145288. hdl:2292/31757. ISSN 0097-5397.
  • Abbott, Alastair A.; Calude, Cristian S.; Dinneen, Michael J.; Hua, Richard (2019). "A hybrid quantum-classical paradigm to mitigate embedding costs in quantum annealing". International Journal of Quantum Information. 17 (5): 1950042–1950453. arXiv:1803.04340. Bibcode:2019IJQI...1750042A. doi:10.1142/S0219749919500424. ISSN 0219-7499.
  • Abbott, Alastair A; Calude, Cristian S; Dinneen, Michael J; Huang, Nan (1 April 2019). "Experimentally probing the algorithmic randomness and incomputability of quantum randomness". Physica Scripta. 94 (4): 045103. arXiv:1806.08762. Bibcode:2019PhyS...94d5103A. doi:10.1088/1402-4896/aaf36a. ISSN 0031-8949.
  • Calude, Cristian S.; Dumitrescu, Monica (7 June 2018). "A probabilistic anytime algorithm for the halting problem". Computability. 7 (2–3): 259–271. doi:10.3233/COM-170073.
  • Calude, Cristian S.; Staiger, Ludwig (2018). "Liouville, Computable, Borel Normal and Martin-Löf Random Numbers". Theory of Computing Systems. 62 (7): 1573–1585. doi:10.1007/s00224-017-9767-8. ISSN 1432-4350.
  • Calude, Cristian S.; Staiger, Ludwig; Stephan, Frank (2016). "Finite state incompressible infinite sequences". Information and Computation. 247: 23–36. doi:10.1016/j.ic.2015.11.003. hdl:2292/21343.
  • Calude, Cristian S.; Longo, Giuseppe (2017). "The Deluge of Spurious Correlations in Big Data" (PDF). Foundations of Science. 22 (3): 595–612. doi:10.1007/s10699-016-9489-4. ISSN 1233-1821.
  • Abbott, Alastair A.; Calude, Cristian S.; Svozil, Karl (1 October 2015). "A variant of the Kochen-Specker theorem localising value indefiniteness". Journal of Mathematical Physics. 56 (10): 102201. arXiv:1503.01985. Bibcode:2015JMP....56j2201A. doi:10.1063/1.4931658. ISSN 0022-2488.
  • Calude, Cristian S.; Calude, Elena; Dinneen, Michael J. (9 March 2015). "Guest Column: Adiabatic Quantum Computing Challenges". ACM SIGACT News. 46 (1): 40–61. doi:10.1145/2744447.2744459. ISSN 0163-5700.
  • Abbott, Alastair A.; Calude, Cristian S.; Svozil, Karl (10 March 2014). "Value-indefinite observables are almost everywhere". Physical Review A. 89 (3): 032109-032116. arXiv:1309.7188. Bibcode:2014PhRvA..89c2109A. doi:10.1103/PhysRevA.89.032109. ISSN 1050-2947.
  • Calude, Cristian S.; Dinneen, Michael J.; Dumitrescu, Monica; Svozil, Karl (6 August 2010). "Experimental evidence of quantum randomness incomputability". Physical Review A. 82 (2): 022102. arXiv:1004.1521. Bibcode:2010PhRvA..82b2102C. doi:10.1103/PhysRevA.82.022102. ISSN 1050-2947.
  • Calude, Cristian S.; Stay, Michael A. (2008). "Most programs stop quickly or never halt". Advances in Applied Mathematics. 40 (3): 295–308. arXiv:cs/0610153. doi:10.1016/j.aam.2007.01.001.
  • Calude, C. S.; Chaitin, G. J. (1999). "Randomness everywhere". Nature. 400 (6742): 319–320. doi:10.1038/22435. ISSN 0028-0836.

Books

Notes

  1. ^ Publications at DBLP
  2. ^ "Cristian S. Calude: Vitae". Retrieved 4 September 2021.
  3. ^ Cristian Calude at the Mathematics Genealogy Project
  4. ^ "Staff profile page at the university of Auckland". www.cs.auckland.ac.nz.
  5. ^ "Research Groups – CDMTCS". www.cs.auckland.ac.nz.
  6. ^ "Calude Calude's books at Amazon". www.amazon.com.
  7. ^ "Calude's citations". www.cs.auckland.ac.nz.
  8. ^ Marcus, Solomon (2012). "The Art of Reaching the Age of Sixty". In Dinneen, M. J.; Khoussainov, B.; Nies, A. (eds.). Computation, Physics and Beyond. Lecture Notes in Computer Science. Vol. 7160. Berlin, Heidelberg: Springer Berlin Heidelberg. p. 1–19. doi:10.1007/978-3-642-27654-5_1. ISBN 978-3-642-27653-8.
  9. ^ "Deciding Parity Games in Quasipolynomial Time" (PDF). Retrieved 20 August 2022.
  10. ^ "STOC 2017 Accepted Papers" (PDF). Retrieved 20 August 2022.
  11. ^ "ACM SIGACT – STOC Best Paper Award". www.sigact.org.
  12. ^ a b "Decret de decorare semnat de Președintele României, domnul Klaus Iohannis".
  13. ^ IPEC Nerode Prize
  14. ^ https://www.ae-info.org/ae/Member/Calude_Cristian Cristian S. Calude
  15. ^ Chita, Efi. "Nerode Prize". Eatcs.
  16. ^ "SIGMA XI".
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