Siglum / Sigla

A siglum is a stable URI that identifies a given resource published in one node of the federation. Federated nodes share the same uri space, that has the following format:

http://{federation_base_url}/nodeidentifier/resourceid

Each siglum maps to an actionable URL as for example:

http://www.hyperfederation.org/pdiorio-1 => http://www.hypernietzsche.org/pdiorio-1

or

http://www.hyperfederation.org/pdiorio-2 => http://www.hypernietzsche.org/9842674935

Siglums are assigned at functional level, therefore Individual physical elements of an item do not have siglums.
Siglums are assigned only to top level (functional) items. For example, an ESSAY composed of multiple html and image files only have 1 siglum.