Pith Number

pith:VPDBRARA

pith:2008:VPDBRARAZPTPBMFEAQH5NOIGUI

not attested not anchored not stored refs pending

Populating the swampland: the case of U(1)^496 and E_8 x U(1)^248

Bartomeu Fiol

arxiv:0809.1525 v1 · 2008-09-09 · 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{VPDBRARAZPTPBMFEAQH5NOIGUI}

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	2026-05-18T02:35:14.876913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abc6188220cbe6f0b0a4040fd6b906a2346d445b52149a13fde6f377a1a8c265

Aliases

arxiv: 0809.1525 · arxiv_version: 0809.1525v1 · doi: 10.48550/arxiv.0809.1525 · pith_short_12: VPDBRARAZPTP · pith_short_16: VPDBRARAZPTPBMFE · pith_short_8: VPDBRARA

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/VPDBRARAZPTPBMFEAQH5NOIGUI \
  | 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: abc6188220cbe6f0b0a4040fd6b906a2346d445b52149a13fde6f377a1a8c265

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9928a4215506b99d4d6c7e193b238f6c66827f2cddffca39deb9e524bfa0f71e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2008-09-09T09:53:12Z",
    "title_canon_sha256": "2742bb3eec5383351ce499bdbd7685b2f54ae98f7564c65527ec10993f2fb22a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.1525",
    "kind": "arxiv",
    "version": 1
  }
}