Pith Number

pith:PUIOZ3MY

pith:2000:PUIOZ3MYTVOAD7YYTJC2XBTHQM

not attested not anchored not stored refs pending

Algebraic Quantum Field Theory, Perturbation Theory, and the Loop Expansion

K. Fredenhagen, M. Duetsch

arxiv:hep-th/0001129 v1 · 2000-01-20 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PUIOZ3MYTVOAD7YYTJC2XBTHQM}

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

Relative entropy for $\lambda \phi^4$ in the Rindler wedge

Receipt and verification

First computed	2026-07-04T16:20:37.276560Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d10eced989d5c01ff189a45ab866783265e76521cfa0a92352e684e999e6bbe

Aliases

arxiv: hep-th/0001129 · arxiv_version: hep-th/0001129v1 · doi: 10.48550/arxiv.hep-th/0001129 · pith_short_12: PUIOZ3MYTVOA · pith_short_16: PUIOZ3MYTVOAD7YY · pith_short_8: PUIOZ3MY

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/PUIOZ3MYTVOAD7YYTJC2XBTHQM \
  | 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: 7d10eced989d5c01ff189a45ab866783265e76521cfa0a92352e684e999e6bbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a80499ccf218cb30a1013cb71eac7d1ad42fc1ab4a036b3da1c5d7b70843f4dc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2000-01-20T18:34:23Z",
    "title_canon_sha256": "a77c5c951afe75a2fe987a7f5444a20a51f7390a55ec93117fc6a4ee4641497a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0001129",
    "kind": "arxiv",
    "version": 1
  }
}