Continua la discussione da «Falkvinge elogia il libero mercato» | il manifesto - Stefano Bocconetti:
Bello slogan, peccato che non funzioni così: https://en.wikipedia.org/wiki/Formal_system
[…] A formal system need not be mathematical as such; for example, Spinoza’s Ethics imitates the form of Euclid’s Elements.
Each formal system has a formal language, which is composed by primitive symbols. These symbols act on certain rules of formation and are developed by inference from a set of axioms. The system thus consists of any number of formulas built up through finite combinations of the primitive symbols—combinations that are formed from the axioms in accordance with the stated rules.
Formal systems in mathematics consist of the following elements:
- A finite set of symbols (i.e. the alphabet), that can be used for constructing formulas (i.e. finite strings of symbols).
- A grammar, which tells how well-formed formulas (abbreviated wff) are constructed out of the symbols in the alphabet. It is usually required that there be a decision procedure for deciding whether a formula is well formed or not.
- A set of axioms or axiom schemata: each axiom must be a wff.
- A set of inference rules.
Ma perché mettersi a parlare di linguistica?
(nb: è in questa categoria perché è uno spinoff di un thread in categoria con lucchetto, move it as wished.)