simplicial.file
There are lots of standard formats for networks, but none (as far as I know) for simplicial complexes. In the absence of a standard, simplicial uses the most portable storage format, which would be JSON. We may add new formats if required, since JSON isn't very efficient especially for large complexes.
The basic functions read and write JSON-encoded complexes.
read_json
write_json
For special cases, the raw conversion routines are also available.
as_json
as_simplicial_complex
JSONSimplicialComplexEncoder