[{"data":1,"prerenderedAt":4},["ShallowReactive",2],{"gpXR0d3n7K":3},"## Lean4 formalizations of famous model-theoretic and proof-theoretic theorems\n\nAs of writing this, I have written soudness and completeness proofs in Lean for the normal modal logics K and S5. I am currently working on implementing similar proofs for quantified modal logics.\n",1780113396389]