Simplification of Quantifier-free Formulae over Ordered Fields
โ Scribed by ANDREAS DOLZMANN; THOMAS STURM
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 468 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0747-7171
No coin nor oath required. For personal study only.
โฆ Synopsis
Given a quantifier-free first-order formula over the theory of ordered fields, our aim is to find an equivalent first-order formula that is simpler. The notion of a formula being simpler will be specified. An overview is given over various methods combining elements of field theory, order theory, and logic. These methods do not require a Boolean normal form computation. They have been developed and implemented in reduce for simplifying intermediate and final results of automatic quantifier elimination by elimination sets. Their applicability is certainly not restricted to the area of quantifier elimination.
๐ SIMILAR VOLUMES
The following result is an approximation to the answer of the question of Kokorin (Logical Notebook, Unsolved Problems of Mathematics, Novosibirsk, 1986, 41pp; in Russian) about decidability of a quantiรฟer-free theory of รฟeld of rational numbers. Let Q0 be a subset of the set of all rational numbers
Nondeterministic exponential time complexity bounds are established for recognizing true propositional formulas with partially ordered quantiรฟers on propositional variables.