Revista Integración, temas de matemáticas.
Vol. 35 No. 1 (2017): Revista Integración
Research and Innovation Articles

A coinductive approach to real analysis

Guillermo Ortiz-Rico
Universidad del Valle, Departamento de Matemática, Cali, Colombia.
Lina Isabel Triviño-Viera
Universidad del Valle, Departamento de Matemática, Cali

Published 2017-08-09

Keywords

  • Categories,
  • Algebra,
  • Coalgebra,
  • Induction,
  • Coinduction

How to Cite

Ortiz-Rico, G., & Triviño-Viera, L. I. (2017). A coinductive approach to real analysis. Revista Integración, Temas De matemáticas, 35(1), 103–125. https://doi.org/10.18273/revint.v35n1-2017007

Abstract

Coinduction is a dual concept to induction; it has been discovered and studied recently. A simple way to understand its naturalness is noting that it refers to the largest fixed points, while induction refers to smallest fixed points. Originally the technical support of the coinduction was the lattices theory through the largest fixed points; now this support is in the language categories through the final F-coalgebras. The F-coalgebras  is a dual concept of generalization to algebras for a functor F. In this paper we focus on a particular type of F-coalgebras: stream automata. Our aim will be to use the framework of stream automata to illustrate the coinductive character of real analysis through classical results as the fundamental theorem of calculus, Taylor series and the solution of certain differential equations.

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References

[1] Aczel P., Non-Well-Founded Sets, Stanford University, Center for the Study of Language and Information, 1988.

[2] Burris S. and Sankappanavar H.P., A Course in Universal Algebra, Springer-Verlarg, New York, 1981.

[3] Fauser B. and Pavlovic D., "Smooth coalgebra: testing vector analysis", Math. Structures Comput. Sci. (2015), 1-141.

[4] Gumm P., "Functor for Coalgebras", Algebra Universalis 45 (2001), No. 2-3, 135-147.

[5] Hansen H.H., Kupke C. and Rutten J.J., "Stream differential equations: specifications formats and solution methods", Log. Methods Comput. Sci 13 (2017), No. 1, 151.

[6] Jacobs B. and Rutten J.J., "A tutorial on (Co)algebras and (Co)induction", EATCS Bulletin 62 (1997), 222-259.

[7] Ortiz G. and Valencia S., "La Categoricidad de los reales en Hilbert, Rev. Bras. Hist. Mat. 10 (2010), No. 19, 39-65.

[8] Pattinson D., An introduction to the Theory of Coalgebras, Course notes Institut für Informatik, München, 2003.

[9] Rutten J.J., "A coinductive calculus of streams", Math. Structures Comput. Sci. 15 (2005), No. 1 93-147.

[10] Rutten J.J., "Behavioural differential equations: a coinductive calculus of streams, automatas and power series", Theoret. Comput. Sci. 308 (2003), 1-153.