Pith Number

pith:USWY64VC

pith:2012:USWY64VCLU2MKVE2LLUQIUWYBI

not attested not anchored not stored refs pending

Looking for the lost torus

Amador Martin-Pizarro, Frank Olaf Wagner, Thomas Blossier

arxiv:1211.7235 v5 · 2012-11-30 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{USWY64VCLU2MKVE2LLUQIUWYBI}

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	2026-05-18T02:29:16.099457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4ad8f72a25d34c5549a5ae90452d80a0211b0ff4c36f4bef9398ecbfdc1017a

Aliases

arxiv: 1211.7235 · arxiv_version: 1211.7235v5 · doi: 10.48550/arxiv.1211.7235 · pith_short_12: USWY64VCLU2M · pith_short_16: USWY64VCLU2MKVE2 · pith_short_8: USWY64VC

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/USWY64VCLU2MKVE2LLUQIUWYBI \
  | 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: a4ad8f72a25d34c5549a5ae90452d80a0211b0ff4c36f4bef9398ecbfdc1017a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f49596c9e5e67f1341694a745b54d2f7b10b2d6d7d9a4e42f7c2590578082631",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-11-30T12:57:06Z",
    "title_canon_sha256": "9e60579271fa11a27bda78ec0dc7440b4d066e19e0aa51a7fe49640a0cf93c7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.7235",
    "kind": "arxiv",
    "version": 5
  }
}