Pith Number

pith:H73P3DUZ

pith:2013:H73P3DUZMSGKBGWHTXMJ5WFNDT

not attested not anchored not stored refs pending

Intrinsic torsion in quaternionic contact geometry

Diego Conti

arxiv:1306.0890 v3 · 2013-06-04 · 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{H73P3DUZMSGKBGWHTXMJ5WFNDT}

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	2026-05-18T01:10:38.972833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ff6fd8e99648ca09ac79dd89ed8ad1cc0701dbf0e42507529eb1affba78f34b

Aliases

arxiv: 1306.0890 · arxiv_version: 1306.0890v3 · doi: 10.48550/arxiv.1306.0890 · pith_short_12: H73P3DUZMSGK · pith_short_16: H73P3DUZMSGKBGWH · pith_short_8: H73P3DUZ

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/H73P3DUZMSGKBGWHTXMJ5WFNDT \
  | 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: 3ff6fd8e99648ca09ac79dd89ed8ad1cc0701dbf0e42507529eb1affba78f34b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b6d66df99f622e950d0d21511c69531e3ca5464a004c67fb94f6da2912682f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-06-04T19:56:31Z",
    "title_canon_sha256": "e946bf354bf92c61eecbd7cb28812329a1cd96263ad85a05431bb933f2d94b21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.0890",
    "kind": "arxiv",
    "version": 3
  }
}