We introduce a new formalization of Higher-Order-Logic (abbreviated Hol), which we baptized Formath, an
acronym for FORMAl MATHematics. We discuss the syntax, semantics, deduction-rules, axioms and principles of extension,
after which we prove soundness and consistency. The semantics are comparable to other systems for Hol, such as Hol-4 and
Hol-Light, but other parts differ from the traditional way of working, for example the deduction-rules and axioms. We
discuss these differences in large extent. We also talk about porting theorems to the Formath library, provide examples
and discuss the applications.