Pith Number

pith:SAOK67F5

pith:2011:SAOK67F5633IHAPOJEEIAOXMVT

not attested not anchored not stored refs pending

Double solid twistor spaces II: general case

Nobuhiro Honda

arxiv:1109.5425 v2 · 2011-09-26 · math.DG · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SAOK67F5633IHAPOJEEIAOXMVT}

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	2026-05-18T04:10:58.328745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

901caf7cbdf6f68381ee4908803aecacff786b15ffc23b79fab13a6a8a93ca8c

Aliases

arxiv: 1109.5425 · arxiv_version: 1109.5425v2 · doi: 10.48550/arxiv.1109.5425 · pith_short_12: SAOK67F5633I · pith_short_16: SAOK67F5633IHAPO · pith_short_8: SAOK67F5

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/SAOK67F5633IHAPOJEEIAOXMVT \
  | 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: 901caf7cbdf6f68381ee4908803aecacff786b15ffc23b79fab13a6a8a93ca8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "254d2e5a7a8579993ceaa77084f00f259f3c43f7bfdb092cc0551ca89795c72d",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2011-09-26T02:05:57Z",
    "title_canon_sha256": "c6732ab75406b63b2f22f73c98dd2824c811e54f6bebd23cf85c6cdae6368ef8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5425",
    "kind": "arxiv",
    "version": 2
  }
}