Pith Number

pith:ONNCPE22

pith:2015:ONNCPE2253YSULZI2WHN263BOC

not attested not anchored not stored refs pending

Algebraic dimension of twistor spaces whose fundamental system is a pencil

Bernd Kreussler, Nobuhiro Honda

arxiv:1510.07232 v2 · 2015-10-25 · 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{ONNCPE2253YSULZI2WHN263BOC}

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	2026-05-18T00:42:33.224843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

735a27935aeef12a2f28d58edd7b617089bf2ca814ff736f6f6e7d2d160f4b44

Aliases

arxiv: 1510.07232 · arxiv_version: 1510.07232v2 · doi: 10.48550/arxiv.1510.07232 · pith_short_12: ONNCPE2253YS · pith_short_16: ONNCPE2253YSULZI · pith_short_8: ONNCPE22

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/ONNCPE2253YSULZI2WHN263BOC \
  | 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: 735a27935aeef12a2f28d58edd7b617089bf2ca814ff736f6f6e7d2d160f4b44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb3ec422747660681591d81dc03b98194125225e01c74f0f0661615c3a56fab3",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-10-25T11:23:42Z",
    "title_canon_sha256": "e0360e64289672c662cdc88de2d8a2d1a451a88db7ae5f703caaaa0ebc0b9810"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.07232",
    "kind": "arxiv",
    "version": 2
  }
}