On the Unavoidable Uncertainty of Truth in Dynamic Geometry Proving
The aim of this note is to discuss some issues posed by the emergency of universal interfaces able to decide on the truth of geometric statements. More specifically, we consider a recent GeoGebra module allowing general users to verify standard geometric theorems. Working with this module in the con...
| Autores: | , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2015 |
| País: | España |
| Recursos: | Universidad de Cantabria (UC) |
| Repositório: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Idioma: | inglês |
| OAI Identifier: | oai:repositorio.unican.es:10902/7266 |
| Acesso em linha: | http://hdl.handle.net/10902/7266 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Dynamic geometry Automated theorem proving GeoGebra Varignon Theorem |
| Resumo: | The aim of this note is to discuss some issues posed by the emergency of universal interfaces able to decide on the truth of geometric statements. More specifically, we consider a recent GeoGebra module allowing general users to verify standard geometric theorems. Working with this module in the context of Varignon’s theorem, we were driven – by the characteristics of the GeoGebra interface– to perform a quite detailed study of the very diverse fate of attempting to automatically prove this statement, when using two different construction procedures.We highlight the relevance –for the theorem proving output– of expression power of the dynamic geometry interface, and we show that the algorithm deciding about the truth of some –even quite simple– statements can fall into a not true and not false situation, providing a source of confusion for a standard user and an interesting benchmark for geometers interested in discovering new geometric facts. |
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