Pith Number

pith:4J77OYFF

pith:2019:4J77OYFFUWEMSLWACWCZ7BJ3S7

not attested not anchored not stored refs pending

A generally covariant measurement scheme for quantum field theory in curved spacetimes

Christopher J. Fewster

arxiv:1904.06944 v1 · 2019-04-15 · gr-qc · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4J77OYFFUWEMSLWACWCZ7BJ3S7}

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	2026-05-17T23:48:35.686557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e27ff760a5a588c92ec015859f853b97fc4137ec7c1f115de63659ebd5476564

Aliases

arxiv: 1904.06944 · arxiv_version: 1904.06944v1 · doi: 10.48550/arxiv.1904.06944 · pith_short_12: 4J77OYFFUWEM · pith_short_16: 4J77OYFFUWEMSLWA · pith_short_8: 4J77OYFF

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/4J77OYFFUWEMSLWACWCZ7BJ3S7 \
  | 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: e27ff760a5a588c92ec015859f853b97fc4137ec7c1f115de63659ebd5476564

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63feeba4e83fdc157f20750a01ef87009a2bba44df82250b0d8f55dc80e6a314",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-04-15T10:14:49Z",
    "title_canon_sha256": "23d3be2309816fa081520e98bfba8e5c969e49a50b92f6c2fd6ffab44a84752f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06944",
    "kind": "arxiv",
    "version": 1
  }
}