Pith Number

pith:MFRCTLG3

pith:2017:MFRCTLG3PPXCBZWTRA6DLXLBQM

not attested not anchored not stored refs pending

2nd order PDEs: geometric and functional considerations

Andrea Pezzi

arxiv:1711.01140 v1 · 2017-10-26 · math.GM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MFRCTLG3PPXCBZWTRA6DLXLBQM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:31:23.322929Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

616229acdb7bee20e6d3883c35dd6183108994d1924fc8aa99450682cf080fde

Aliases

arxiv: 1711.01140 · arxiv_version: 1711.01140v1 · doi: 10.48550/arxiv.1711.01140 · pith_short_12: MFRCTLG3PPXC · pith_short_16: MFRCTLG3PPXCBZWT · pith_short_8: MFRCTLG3

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/MFRCTLG3PPXCBZWTRA6DLXLBQM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 616229acdb7bee20e6d3883c35dd6183108994d1924fc8aa99450682cf080fde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50dca24eb11a6606b6e4ae3e51a67455b7233549791c8b2add4e7305c4e0c62f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2017-10-26T13:25:20Z",
    "title_canon_sha256": "c982bfd489b747b4ba060d5087b1f821b26c311200632a1b203dc1a1633b2897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.01140",
    "kind": "arxiv",
    "version": 1
  }
}