Pith Number

pith:EUEO2DUX

pith:2013:EUEO2DUXYZPIU73YMYGSV2HSHG

not attested not anchored not stored refs pending

Twistor spaces for hyperkaehler implosions

Andrew Dancer, Andrew Swann, Frances Kirwan

arxiv:1308.3196 v4 · 2013-08-14 · math.SG · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EUEO2DUXYZPIU73YMYGSV2HSHG}

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	2026-05-18T02:30:08.600206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2508ed0e97c65e8a7f78660d2ae8f239bd96cc2c59de1f6a2f1944af2fdeb97d

Aliases

arxiv: 1308.3196 · arxiv_version: 1308.3196v4 · doi: 10.48550/arxiv.1308.3196 · pith_short_12: EUEO2DUXYZPI · pith_short_16: EUEO2DUXYZPIU73Y · pith_short_8: EUEO2DUX

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/EUEO2DUXYZPIU73YMYGSV2HSHG \
  | 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: 2508ed0e97c65e8a7f78660d2ae8f239bd96cc2c59de1f6a2f1944af2fdeb97d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "913432fef4cc5ec3b4c3547bcf71580d3fc94e8c46e7f436283c32c928f92f42",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2013-08-14T18:13:38Z",
    "title_canon_sha256": "cb0238c5906c8251421b7355e5e1f3feaead12d730313cc96275b4881f1afcb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3196",
    "kind": "arxiv",
    "version": 4
  }
}