Pith Number

pith:DX7MNLYU

pith:1999:DX7MNLYUA5XEJAQ2QEOOY7GU5Q

not attested not anchored not stored refs pending

BRST Cohomology and Phase Space Reduction in Deformation Quantisation

Hans-Christian Herbig, Martin Bordemann, Stefan Waldmann

arxiv:math/9901015 v2 · 1999-01-05 · math.QA · math-ph · math.MP · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DX7MNLYUA5XEJAQ2QEOOY7GU5Q}

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	2026-05-18T02:35:38.404010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1dfec6af14076e44821a811cec7cd4ec36b456057d634299b80d65d2b1d41f8a

Aliases

arxiv: math/9901015 · arxiv_version: math/9901015v2 · doi: 10.48550/arxiv.math/9901015 · pith_short_12: DX7MNLYUA5XE · pith_short_16: DX7MNLYUA5XEJAQ2 · pith_short_8: DX7MNLYU

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/DX7MNLYUA5XEJAQ2QEOOY7GU5Q \
  | 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: 1dfec6af14076e44821a811cec7cd4ec36b456057d634299b80d65d2b1d41f8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ba1e6e267489a889b592de3dbb8e5cfd07b0b0495ea9f957aeb88e3e36f693f",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "math.SG"
    ],
    "license": "",
    "primary_cat": "math.QA",
    "submitted_at": "1999-01-05T16:16:46Z",
    "title_canon_sha256": "50d50d2ca9674d1ea6993156694db7a4a73ba6191165d5935485cf0d27240800"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9901015",
    "kind": "arxiv",
    "version": 2
  }
}