Recent Posts For Formal Systems
Well-Formed Formula (WFF)
A well-formed formula (WFF) is a syntactically correct expression in a formal…
Weakening Rule in Logic
The weakening rule allows adding propositions to a logical derivation without invalidating…
Valuation in Formal Languages
A valuation assigns semantic values, like truth values, to formulas in a…
Syntactic Consequence in Formal Systems
Syntactic consequence defines the relationship between premises and conclusions derived through logical…
Non-Standard Logics
Explore logics that deviate from or expand classical logic. This includes many-valued,…