Pith Number

pith:SSPN67W4

pith:2001:SSPN67W43UCMXJF55AGH7CNKPX

not attested not anchored not stored refs pending

Dynamical systems approach to G2 cosmology

Claes Uggla (University of Karlstad), Henk van Elst (Queen Mary, John Wainwright (University of Waterloo), London)

arxiv:gr-qc/0107041 v2 · 2001-07-11 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SSPN67W43UCMXJF55AGH7CNKPX}

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	2026-07-04T16:26:55.735925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

949edf7edcdd04cba4bde80c7f89aa7dd302d7607d24abad0019f974620a69fb

Aliases

arxiv: gr-qc/0107041 · arxiv_version: gr-qc/0107041v2 · doi: 10.48550/arxiv.gr-qc/0107041 · pith_short_12: SSPN67W43UCM · pith_short_16: SSPN67W43UCMXJF5 · pith_short_8: SSPN67W4

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/SSPN67W43UCMXJF55AGH7CNKPX \
  | 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: 949edf7edcdd04cba4bde80c7f89aa7dd302d7607d24abad0019f974620a69fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a575b4c40532fe0ba98381106b0d2af2d53a1b8a4103955470094eb4b4452b29",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2001-07-11T15:21:38Z",
    "title_canon_sha256": "809d92e3d0fa5c6cd41e8d58f00cfc4399f436d8721758ff634da3c078fa2fb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0107041",
    "kind": "arxiv",
    "version": 2
  }
}