Pith Number

pith:BPFB7I3I

pith:2000:BPFB7I3IJYTKXSDVFE5EILWCBL

not attested not anchored not stored refs pending

D-branes, B-fields and twisted K-theory

P. Bouwknegt, V. Mathai

arxiv:hep-th/0002023 v3 · 2000-02-02 · hep-th · math.DG · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BPFB7I3IJYTKXSDVFE5EILWCBL}

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	2026-05-18T02:36:13.198908Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bca1fa3684e26abc875293a442ec20ada28af1ecfdbaba3c936d20d5a2a20b0

Aliases

arxiv: hep-th/0002023 · arxiv_version: hep-th/0002023v3 · doi: 10.48550/arxiv.hep-th/0002023 · pith_short_12: BPFB7I3IJYTK · pith_short_16: BPFB7I3IJYTKXSDV · pith_short_8: BPFB7I3I

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/BPFB7I3IJYTKXSDVFE5EILWCBL \
  | 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: 0bca1fa3684e26abc875293a442ec20ada28af1ecfdbaba3c936d20d5a2a20b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e775581884a02bb90e10259000dbf5f88ff992169ee2e9120aace077c5ba68c",
    "cross_cats_sorted": [
      "math.DG",
      "math.KT"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2000-02-02T23:33:14Z",
    "title_canon_sha256": "00640ca6b48e688982ac67d559bdd7e520ef9b9f6cb817a8cba62622630001de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0002023",
    "kind": "arxiv",
    "version": 3
  }
}