FARZANEGI
درونشد
هموندی
Encyclopedia
Philosophy
Logic
Mathematics
Computing
Ontology
Persian Translator
Logic Lab
Hall of Fame
Library
Dictionary
About
Modal Theorem K.5
دیسهای
◊(𝐴∧𝐵)⊃(◊𝐴∧◊𝐵)
◊(A∧B)⊃(◊A∧◊B)