PDG as dedicated website, and PDG-as-a-service, and PDG as an overlay for arxiv

Two ways to present the Physics Derivation Graph is as a website (currently https://derivationmap.net/ ) and as an API (see https://derivationmap.net/api/v1/resources/derivations/list as an example from the https://derivationmap.net/api/v1/documentation ). 

A third way to present the content would be as an overlay for existing content, e.g. https://arxiv.org/ . 

Related: Comments on papers

The content overlay concept has been explored primarily for comments. For example, active efforts include

• https://fermatslibrary.com/, which also has a chrome extension, Librarian, which isn't functional. Example comments: https://fermatslibrary.com/arxiv_comments?url=https://arxiv.org/pdf/1602.03837.pdf
• https://scirate.com/; as an example of comments on a paper see https://scirate.com/arxiv/2205.09767 ; https://reimaginereview.asapbio.org/listing/scirate/
• https://scipost.org/?tab=commentaries ; http://researchpracticesandtools.blogspot.com/2016/07/scipost-right-tool-for-commenting-arxiv.html

For more related projects, see https://reimaginereview.asapbio.org/

Illustration of the comment section for research papers: https://phdcomics.com/comics.php?f=1178

Inactive efforts:

• https://selectedpapers.net/ ; https://johncarlosbaez.wordpress.com/2013/06/14/the-selected-papers-network-part-2/

Another overlay: variable identification

• Find the same variable referenced in multiple papers
• Find the same expression reference in multiple papers

Having all of the metadata for every archive paper would be a good starting point to reference the variables with.

Example of active effort:

• Subscription-based latex search of equations: https://www.searchonmath.com/ ; $0.99 for the first month as of 2022-05-26, then $4.50/month after. Can search either web (stackoverflow, wikipedia) xor arxiv content.

Inactive effort:

• http://numericalatlas.cs.ucl.ac.uk/ which is described in https://arxiv.org/abs/2107.00665