Pith Number

pith:FIQT47LG

pith:2009:FIQT47LGMDASIH72D23PIFZ5CV

not attested not anchored not stored refs pending

Instantons on the Taub-NUT Space

Sergey A. Cherkis

arxiv:0902.4724 v2 · 2009-02-27 · hep-th · 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{FIQT47LGMDASIH72D23PIFZ5CV}

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	2026-05-18T04:32:20.487426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a213e7d6660c1241ffa1eb6f4173d15667fc63a9345966d53677c1e0d059223

Aliases

arxiv: 0902.4724 · arxiv_version: 0902.4724v2 · doi: 10.48550/arxiv.0902.4724 · pith_short_12: FIQT47LGMDAS · pith_short_16: FIQT47LGMDASIH72 · pith_short_8: FIQT47LG

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/FIQT47LGMDASIH72D23PIFZ5CV \
  | 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: 2a213e7d6660c1241ffa1eb6f4173d15667fc63a9345966d53677c1e0d059223

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cae870d43cea21e2e8a9497d5f474b35bc806b5a8b53dd6e0f311a744cc09dbc",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-02-27T16:27:33Z",
    "title_canon_sha256": "5a52fea0d8c0c4a7c0e7bf63d8d1e2a3e490c211990f45d3d8135cb64a18e72d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4724",
    "kind": "arxiv",
    "version": 2
  }
}