Pith Number

pith:27G7NVGC

pith:1997:27G7NVGCFUSNRO27T6RLQEKXAK

not attested not anchored not stored refs pending

On the Picture Dependence of Ramond-Ramond Cohomology

Barton Zwiebach, Nathan Berkovits

arxiv:hep-th/9711087 v2 · 1997-11-12 · 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{27G7NVGCFUSNRO27T6RLQEKXAK}

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	2026-05-18T02:36:02.013797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7cdf6d4c22d24d8bb5f9fa2b8115702abc8b26e82add4292e003a68bd2c709c

Aliases

arxiv: hep-th/9711087 · arxiv_version: hep-th/9711087v2 · doi: 10.48550/arxiv.hep-th/9711087 · pith_short_12: 27G7NVGCFUSN · pith_short_16: 27G7NVGCFUSNRO27 · pith_short_8: 27G7NVGC

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/27G7NVGCFUSNRO27T6RLQEKXAK \
  | 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: d7cdf6d4c22d24d8bb5f9fa2b8115702abc8b26e82add4292e003a68bd2c709c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "794652a50ebe797fbe150270cb6f9b385c4d1538d0b3580ff95b8a6db8b4c76f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1997-11-12T18:14:30Z",
    "title_canon_sha256": "78aeb3e6faf82da7144c7891b2112b7041abc4f0ef50dff0edcf4a0824b8699f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9711087",
    "kind": "arxiv",
    "version": 2
  }
}