# * Formalized Metareasoning in Type Theory *

## by Todd B. Knoblock, Robert L. Constable

1986

Proceedings of First IEEE Symposium on Logic in Computer Science

- Tech Report TR86-472 http://hdl.handle.net/1813/6582
- unofficial copies PDF, PS

**Abstract**

In this paper we present two practical methods of formalizing the metatheory of constructive type theory and demonstrate how they would be used to improve the reasoning capabilities of formal problem solving systems such as Nuprl. One method depends upon the design of a family of languages, and we sketch that construction. The second approach depends on a particular metatheorem that justifies partial reflection, and we outline this proof. We also illustrate the construction of simple metatheoretic functions, *tactics*, in Nuprl.

**bibTex ref: Knob86**

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