Initial commit
first commit
proof Evidence
proof condition
fixed Tactic Notation
proof Condition
proof strategy and supported
fixed reduction
finished progress proof
rename Type_System.v
start proof preservation
finished proof T_INS
finished proof T_SUP
fixed T-SUP and T-STR in Type_System.v
fixed TypeSystem definition and finished proof T_STR
finished proof preservation
add Soundness_TypeSystem.v
finished proof soundness of type system
first commit