This archive contains the Isabelle formalization of the results presented in
the paper draft

    Nested Multisets, Hereditary Multisets, and Syntactic Ordinals
    by Jasmin Christian Blanchette, Mathias Fleury, and Dmitriy Traytel

The ".thy" files are Isabelle theory files. They can be processed as follows:

    isabelle jedit Syntactic_Ordinal.thy

A PDF version of the proof is available as

    document.pdf
