Pith Number

pith:SY7U3CPF

pith:2009:SY7U3CPFQFBWTNU6EYMCXS7HHB

not attested not anchored not stored refs pending

Strong Kaehler with torsion structures from almost contact manifolds

Anna Fino, Luis Ugarte, Marisa Fernandez, Raquel Villacampa

arxiv:0909.3946 v3 · 2009-09-22 · 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{SY7U3CPFQFBWTNU6EYMCXS7HHB}

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	2026-05-18T04:35:46.971778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

963f4d89e5814369b69e26182bcbe7385a09a85bdf1b23719ad04d65bc250336

Aliases

arxiv: 0909.3946 · arxiv_version: 0909.3946v3 · doi: 10.48550/arxiv.0909.3946 · pith_short_12: SY7U3CPFQFBW · pith_short_16: SY7U3CPFQFBWTNU6 · pith_short_8: SY7U3CPF

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/SY7U3CPFQFBWTNU6EYMCXS7HHB \
  | 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: 963f4d89e5814369b69e26182bcbe7385a09a85bdf1b23719ad04d65bc250336

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d841e85706bb1460da0ef2a064ee9fe9d0c980922ba65925e4c113c41aacf134",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-09-22T09:59:34Z",
    "title_canon_sha256": "819b98acb9878556dce7eefd94c5eaee3c92e42fb46f51e466c5403fc63bbf42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3946",
    "kind": "arxiv",
    "version": 3
  }
}