Pith Number

pith:QTE3S6MD

pith:2019:QTE3S6MDBWKABMFMYGCFCBE63B

not attested not anchored not stored refs pending

Geometric automorphism groups of symplectic 4-manifolds

Bo Dai, Chung-I Ho, Tian-Jun Li

arxiv:1902.09717 v1 · 2019-02-26 · math.DG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QTE3S6MDBWKABMFMYGCFCBE63B}

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	2026-05-17T23:52:00.913322Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84c9b979830d9400b0acc18451049ed877f9066d47a13017050f923243d4ae50

Aliases

arxiv: 1902.09717 · arxiv_version: 1902.09717v1 · doi: 10.48550/arxiv.1902.09717 · pith_short_12: QTE3S6MDBWKA · pith_short_16: QTE3S6MDBWKABMFM · pith_short_8: QTE3S6MD

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/QTE3S6MDBWKABMFMYGCFCBE63B \
  | 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: 84c9b979830d9400b0acc18451049ed877f9066d47a13017050f923243d4ae50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed184779ac666b4b6490006df13c4b123d026ae41c3ac406edb3acccbed60e63",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-02-26T03:23:05Z",
    "title_canon_sha256": "765a744a1bce1e19cb7d6f384d91ff8c38bc5d6f45bf04b37d6b4cd5801af386"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09717",
    "kind": "arxiv",
    "version": 1
  }
}