Pith Number

pith:D44KHBMU

pith:2009:D44KHBMUPAH5OAL77NDANRSSQC

not attested not anchored not stored refs pending

Einstein Metrics on Group Manifolds and Cosets

C.N. Pope, G.W. Gibbons, H. Lu

arxiv:0903.2493 v1 · 2009-03-16 · hep-th · gr-qc · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D44KHBMUPAH5OAL77NDANRSSQC}

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	2026-05-18T04:27:45.584726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f38a38594780fd7017ffb4606c652809162cb7699f5fb789204130f753c0315

Aliases

arxiv: 0903.2493 · arxiv_version: 0903.2493v1 · doi: 10.48550/arxiv.0903.2493 · pith_short_12: D44KHBMUPAH5 · pith_short_16: D44KHBMUPAH5OAL7 · pith_short_8: D44KHBMU

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/D44KHBMUPAH5OAL77NDANRSSQC \
  | 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: 1f38a38594780fd7017ffb4606c652809162cb7699f5fb789204130f753c0315

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9456a84b17fa903d47b4d188a5e99c55107bf8abcec9494573c87d72f3c9889a",
    "cross_cats_sorted": [
      "gr-qc",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-03-16T15:45:45Z",
    "title_canon_sha256": "44310a38e2b880d54983358970aeec0e30993c07291d5e67bfb1cc700bc3713d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2493",
    "kind": "arxiv",
    "version": 1
  }
}