Pith Number

pith:DQNYXBIL

pith:2009:DQNYXBILNIFZ6UKYIUUH5VIBZ4

not attested not anchored not stored refs pending

The Formulation of Quantum Field Theory in Curved Spacetime

Robert M. Wald

arxiv:0907.0416 v1 · 2009-07-02 · 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{DQNYXBILNIFZ6UKYIUUH5VIBZ4}

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.

Cited by

1 paper in Pith

Challenges for describing unitary evolution in nontrivial geometries: pictures and representations

Receipt and verification

First computed	2026-07-04T15:45:28.266111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c1b8b850b6a0b9f515845287ed501cf2265cad0c1c400ae898cb4d4f399c511

Aliases

arxiv: 0907.0416 · arxiv_version: 0907.0416v1 · doi: 10.48550/arxiv.0907.0416 · pith_short_12: DQNYXBILNIFZ · pith_short_16: DQNYXBILNIFZ6UKY · pith_short_8: DQNYXBIL

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/DQNYXBILNIFZ6UKYIUUH5VIBZ4 \
  | 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: 1c1b8b850b6a0b9f515845287ed501cf2265cad0c1c400ae898cb4d4f399c511

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "135f303994b89dc64b282d9e9038a2f021317904181a4c29cf0e1cda4d8664f5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-07-02T15:59:37Z",
    "title_canon_sha256": "94e7505edfd8b58af65e92973d043acd26f291b0beb703d5ebfd5bedafb37a95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0416",
    "kind": "arxiv",
    "version": 1
  }
}