122
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TYPES
2000
Springer
15 years 7 months ago
2000
Springer
Higman's lemma has a very elegant, non-constructive proof due to Nash-Williams [NW63] using the so-called minimal-bad-sequence argument. The objective of the present paper is ...
176
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TYPES
2000
Springer
15 years 7 months ago
2000
Springer
Abstract. In the FTA project in Nijmegen we have formalized a constructive proof of the Fundamental Theorem of Algebra. In the formalization, we have first defined the (constructiv...
139
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TYPES
2000
Springer
15 years 7 months ago
2000
Springer
We describe a construction of the real numbers carried out in the Coq proof assistant. The basis is a set of axioms for the constructive real numbers as used in the FTA (Fundamenta...