Pith Number

pith:7SKVZA2F

pith:2009:7SKVZA2FQ2M24RD4QUJLWNEWCS

not attested not anchored not stored refs pending

A Simple, Direct Finite Differencing of the Einstein Equations

Travis Garrett

arxiv:0902.0803 v1 · 2009-02-04 · 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{7SKVZA2FQ2M24RD4QUJLWNEWCS}

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	2026-07-04T15:37:24.199860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc955c83458699ae447c8512bb349614a707436a2f2831eec66e887678e0e8ba

Aliases

arxiv: 0902.0803 · arxiv_version: 0902.0803v1 · doi: 10.48550/arxiv.0902.0803 · pith_short_12: 7SKVZA2FQ2M2 · pith_short_16: 7SKVZA2FQ2M24RD4 · pith_short_8: 7SKVZA2F

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/7SKVZA2FQ2M24RD4QUJLWNEWCS \
  | 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: fc955c83458699ae447c8512bb349614a707436a2f2831eec66e887678e0e8ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60cc19dde3fc3a631f48ba5563bc4faf922ee21ffc2af7bae9f5757b49657e35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-02-04T21:48:31Z",
    "title_canon_sha256": "47f4d9d0ed54c10755c170b3fb06f6bdabceeaa286588b0ebb2fa68e516c40bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0803",
    "kind": "arxiv",
    "version": 1
  }
}