Pith Number

pith:NMX26VUP

pith:1997:NMX26VUPCNXZPMQUZCUNLDFFEY

not attested not anchored not stored refs pending

Numerical treatment of the hyperboloidal initial value problem for the vacuum Einstein equations. I. The conformal field equations

J. Frauendiener

arxiv:gr-qc/9712050 v1 · 1997-12-11 · 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{NMX26VUPCNXZPMQUZCUNLDFFEY}

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	2026-05-18T01:08:07.748334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b2faf568f136f97b214c8a8d58ca5261bfb3dac214336e5b85b6a668d2915c4

Aliases

arxiv: gr-qc/9712050 · arxiv_version: gr-qc/9712050v1 · doi: 10.48550/arxiv.gr-qc/9712050 · pith_short_12: NMX26VUPCNXZ · pith_short_16: NMX26VUPCNXZPMQU · pith_short_8: NMX26VUP

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/NMX26VUPCNXZPMQUZCUNLDFFEY \
  | 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: 6b2faf568f136f97b214c8a8d58ca5261bfb3dac214336e5b85b6a668d2915c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c06c131ee6c28590cb195c1297940b9970d31e5defc9dd51c5aab6744d0f671",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-12-11T15:23:00Z",
    "title_canon_sha256": "052b45ea5b33b3b3c854c2f9df3b0384bcc3dc730b9506aab2704622f9e024d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9712050",
    "kind": "arxiv",
    "version": 1
  }
}