Walter Carnielli
Encyclopedia
Walter Alexandre Carnielli (born on 11 January in 1952 in Campinas
Campinas
Campinas is a city and municipality located in the coastal interior of the state of São Paulo, Brazil. is the administrative center of the meso-region of the same name, with 3,783,597 inhabitants as of the 2010 Census, consisting of 49 cities....

, Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

) is a Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

ian mathematician
Mathematician
A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

, logician, and philosopher, full professor of Logic at the State University of Campinas (UNICAMP). With a Bachelor and a Ms.C. degree in mathematics at the State University of Campinas in Campinas
Campinas
Campinas is a city and municipality located in the coastal interior of the state of São Paulo, Brazil. is the administrative center of the meso-region of the same name, with 3,783,597 inhabitants as of the 2010 Census, consisting of 49 cities....

 he obtained his Ph.D. in 1984 in the same university under the supervision of Newton C. A da Costa and subsequently stayed as a PostDoc at the University of California at Berkeley as a Research Fellow, following an invitation by Leon Henkin
Leon Henkin
Leon Albert Henkin was a logician at the University of California, Berkeley. He was principally known for the "Henkin's completeness proof": his version of the proof of the semantic completeness of standard systems of first-order logic.-The completeness proof:Henkin's result was not novel; it had...

.

Many-valued logic and paraconsistent logic

Carnielli contributed to the proof theory
Proof theory
Proof theory is a branch of mathematical logic that represents proofs as formal mathematical objects, facilitating their analysis by mathematical techniques. Proofs are typically presented as inductively-defined data structures such as plain lists, boxed lists, or trees, which are constructed...

 and semantics
Semantics
Semantics is the study of meaning. It focuses on the relation between signifiers, such as words, phrases, signs and symbols, and what they stand for, their denotata....

 of many-valued logics and paraconsistent logic
Paraconsistent logic
A paraconsistent logic is a logical system that attempts to deal with contradictions in a discriminating way. Alternatively, paraconsistent logic is the subfield of logic that is concerned with studying and developing paraconsistent systems of logic.Inconsistency-tolerant logics have been...

s. His tableau method for many-valued logics generalized all previous treatments of the subject [W. A. Carnielli. Systematization of the finite many-valued logics through the method of tableaux. The Journal of Symbolic Logic 52
(2), 1987, pp. 73–493]. His proposal of the possible-translations semantics (a new semantical interpretation for paraconsistent logics) contributed to a revival in the philosophial interpretation of paraconsistent logics W. A. Carnielli. Possible-translations semantics for paraconsistent logics. In: Frontiers in Paraconsistent Logic: Proceedings of the I World Congress on Paraconsistency, Ghent,
1998, pp. 159–72 , edited by D. Batens et al., Kings College
Publications, 2000, [W. A. Carnielli (with M. E. Coniglio and J. Marcos). Logics of Formal Inconsistency. In: Handbook of Philosophical Logic, vol. 14, pp. 15–107. Eds.: D. Gabbay; F. Guenthner. Springer, 2007].

The logics of formal inconsistency which systematize a large class of paraconsistent logics opened the way to the application of paraconsistency to computer science and to new philosophical investigations on paraconsistency.

Combinatorics, modulated logics, and combinations of logics

He also published on finite and infinite combinatorics
Combinatorics
Combinatorics is a branch of mathematics concerning the study of finite or countable discrete structures. Aspects of combinatorics include counting the structures of a given kind and size , deciding when certain criteria can be met, and constructing and analyzing objects meeting the criteria ,...

, and developed (with his collaborators A. M. Sette an P. A. Veloso) the modulated logics, a new kind of logics which allows the formalization of qualitative reasoning by means of special generalized quantifiers. His research also includes model theory
Model theory
In mathematics, model theory is the study of mathematical structures using tools from mathematical logic....

, non-classical logics and foundations of quantum computation
Quantum computer
A quantum computer is a device for computation that makes direct use of quantum mechanical phenomena, such as superposition and entanglement, to perform operations on data. Quantum computers are different from traditional computers based on transistors...

  and combinations of logics.

Positions and awards

Carnielli served as a Director for the Centre for Logic, Epistemology and the History of Science at UNICAMP for three terms, and served as President of the Brazilian Logic Society. He was distinguished with an Alexander von Humboldt Grant for long term research stays in Germany, and served as en editor and/or a member of editorial boards of major journals, such as Studia Logica, Logic and Logical Philosophy, Journal of Applied Logic,
CLE e-Prints, Reports on Mathematical Logic and Journal of Applied Non-Classical Logics
Journal of Applied Non-Classical Logics
Journal of Applied Non-Classical Logics is a peer reviewed journal published in France by Éditions Hermès-Lavoisier.The editor-in-chief for 2009 is Luis Fariñas del Cerro.- External links :* — official website...

.

Articles

  • W. A. Carnielli. On coloring and covering problems for rook domains, Discrete Mathematics
    Discrete Mathematics (journal)
    Discrete Mathematics is a journal in the broad area of discrete mathematics, combinatorics, graph theory and their applications, published by Elsevier. It publishes both short notes, full length contributions, as well as survey articles. In addition, DM publishes a number of special issues each...

    57 (1985), pp. 9–16.
  • W. A. Carnielli. Systematization of the finite many-valued logics through the method of tableaux. The Journal of Symbolic Logic 52 (2), 1987, pp. 73–493.
  • W. A. Carnielli (with Newton C. A. da Costa). Paraconsistent deontic logics. Philosophia – The Philos. Quarterly of Israel vol.16 numbers 3 and 4 (1988), pp. 293–305.
  • W. A. Carnielli. Hyper-rook domain inequalities. Studies in Applied Mathematics (Massachusetts Institute of Technology) 82,\ n.1 (1990), pp. 59–69.
  • W. A. Carnielli (with C. A. Di Prisco). Some results on polarized partition relations of higher dimension. Mathematical Logic Quarterly 39 (1993) pp. 461–474.
  • W. A. Carnielli (with P. A. S. Veloso). Ultrafilter logic and generic reasoning. In Computational Logic and Proof Theory (Vienna, 1997), pp. 34–53, Lecture Notes in Computer. Science 1289, Springer, Berlin, 1997.
  • W. A. Carnielli. Possible-translations semantics for paraconsistent logics. In: Frontiers in Paraconsistent Logic: Proceedings of the I World Congress on Paraconsistency, Ghent, 1998, pp. 159–72 , edited by D. Batens et al., Kings College Publications, 2000.
  • W. A. Carnielli (with E. L. Monte Carmelo). K2,2-K1,n and K2,n-K2,n bipartite Ramsey numbers. Discrete Mathematics, Vol. 223 (1-3), 2000, pp. 83–92.
  • W. A. Carnielli (with C. Sernadas and J. Rasga). Modulated fibring and the collapsing problem. The Journal of Symbolic Logic 67(4) 2002 pp. 1541–1569.
  • W. A. Carnielli (with J. Marcos). A taxonomy of C- systems . In: Paraconsistency- the Logical Way to the Inconsistent, Lecture Notes in Pure and Applied Mathematics, Vol. 228, pp. 01–94 2002.

  • W. A. Carnielli (with C. Caleiro, M. E. Coniglio and J. Marcos). Two’s company: The humbug of many logical values. In: Logica Universalis (Editor J.-Y. Béziau). Basel: Birkhäuser, 2005, p. 169-189.


  • W. A. Carnielli (with M. E. Coniglio). Splitting Logics. In: We Will Show Them: Essays in Honour of Dov Gabbay. (Editors S. Artemov, H. Barringer, A. S. Avila Garcez, L. C. Lamb and J. Woods). London: King’s College Publications, 2005, v. 1, p. 389-414.

  • W. A. Carnielli(with M. E. Coniglio and J. Marcos). Logics of Formal Inconsistency. In: Handbook of Philosophical Logic, vol. 14, pp. 15–107. Eds.: D. Gabbay; F. Guenthner. Springer, 2007.


  • W. A. Carnielli (with J. Rasga and C. Sernadas).Preservation of Interpolation Features by Fibring.

Mathematical Logic Quarterly
Volume 18, Issue 1, 2008, pages
123-151.
  • W. A. Carnielli (with J. Rasga and C. Sernadas).Interpolation via translations. Mathematical Logic

Quarterly
Volume 55, Issue 5, 2009, pages 515-534.
  • W. A. Carnielli (with J. C. Agudelo).Paraconsistent Machines and their Relation to Quantum Computing.. Journal of Logic and Computation Volume 20, Issue 2, 2010, pages 573-595.

Books

  • R. L. Epstein and W. A. Carnielli. Computability: computable functions, logic and the foundations of mathematics, with the timeline Computability and Undecidability. Second edition. Wadsworth/Thomson Learning, Belmont, CA, 2000.
  • W. A. Carnielli and C. Pizzi. Modalità e multimodalità. Franco Angeli, Milan, 2001.
  • W. A. Carnielli and R.L. Epstein Computabilidade: Funções Computáveis, Lógica e os Fundamentos da Matemática Winner of 2007 Jabuti Award, a prestigious literary prize in Brazil.
  • W. A. Carnielli and C. Pizzi. Modalities and Multimodalities. Springer-Verlag), 2008.
  • W. A. Carnielli, M. E. Coniglio, D. Gabbay, P. Gouveia and C. Sernadas. Analysis and Synthesis of Logics. How to Cut and Paste Reasoning Systems. Applied Logic Series, Springer, 2008.
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