Pith Number

pith:ESXN3OU7

pith:2007:ESXN3OU7PSXCGYD66XCUOJEWHE

not attested not anchored not stored refs pending

Remarks on symplectic twistor spaces

Rui Albuquerque

arxiv:0708.1867 v3 · 2007-08-14 · math.DG · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ESXN3OU7PSXCGYD66XCUOJEWHE}

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	2026-05-18T04:06:21.351435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24aeddba9f7cae23607ef5c5472496393f35849c3c2b1cd6ccbd413561f6293e

Aliases

arxiv: 0708.1867 · arxiv_version: 0708.1867v3 · doi: 10.48550/arxiv.0708.1867 · pith_short_12: ESXN3OU7PSXC · pith_short_16: ESXN3OU7PSXCGYD6 · pith_short_8: ESXN3OU7

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/ESXN3OU7PSXCGYD66XCUOJEWHE \
  | 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: 24aeddba9f7cae23607ef5c5472496393f35849c3c2b1cd6ccbd413561f6293e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6afc739e4ecb309c88b1015378d6cb341a16f4674af114b795acee7743cc4d1",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2007-08-14T11:46:18Z",
    "title_canon_sha256": "d495d180027f3994661f18d401a24b30d5741649375a6593e76385c30169a91d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.1867",
    "kind": "arxiv",
    "version": 3
  }
}