Pith Number

pith:FION4MSY

pith:2009:FION4MSYKCQ5N2T5LYQJJFG3HC

not attested not anchored not stored refs pending

Is the spacetime metric Euclidean rather than Lorentzian?

Rafael D. Sorkin (Perimeter Institute, Syracuse University)

arxiv:0911.1479 v3 · 2009-11-08 · gr-qc · hep-th · math-ph · math.MP · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FION4MSYKCQ5N2T5LYQJJFG3HC}

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	2026-05-18T00:43:10.092944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a1cde325850a1d6ea7d5e209494db38884d98090760b10f899b1cb15afa7ad0

Aliases

arxiv: 0911.1479 · arxiv_version: 0911.1479v3 · doi: 10.48550/arxiv.0911.1479 · pith_short_12: FION4MSYKCQ5 · pith_short_16: FION4MSYKCQ5N2T5 · pith_short_8: FION4MSY

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/FION4MSYKCQ5N2T5LYQJJFG3HC \
  | 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: 2a1cde325850a1d6ea7d5e209494db38884d98090760b10f899b1cb15afa7ad0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afbee2c28615a72eb64ef59d93eea8a9bc5819b7d651e3be40cb5a03a08b31b6",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-11-08T00:44:15Z",
    "title_canon_sha256": "c67a86e45ac48d1ba5197e7ffcd5c4d6bd1ae28d89952da49473ddc7fb30e688"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1479",
    "kind": "arxiv",
    "version": 3
  }
}