Pith Number

pith:VD6QTLOY

pith:2015:VD6QTLOYC2OIUYDJ3QMHG7PHCI

not attested not anchored not stored refs pending

Invariants of contact sub-pseudo-Riemannian structures and Einstein-Weyl geometry

Marek Grochowski, Wojciech Krynski

arxiv:1503.06868 v1 · 2015-03-23 · 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{VD6QTLOYC2OIUYDJ3QMHG7PHCI}

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	2026-05-18T02:20:29.907490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8fd09add8169c8a6069dc18737de7121147bcc893b8862d79be536b2efe1a99

Aliases

arxiv: 1503.06868 · arxiv_version: 1503.06868v1 · doi: 10.48550/arxiv.1503.06868 · pith_short_12: VD6QTLOYC2OI · pith_short_16: VD6QTLOYC2OIUYDJ · pith_short_8: VD6QTLOY

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/VD6QTLOYC2OIUYDJ3QMHG7PHCI \
  | 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: a8fd09add8169c8a6069dc18737de7121147bcc893b8862d79be536b2efe1a99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ef0edeaf2e07e1009774392ceee596e1e79d61048cede8663a8cb305ec133e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-03-23T22:37:34Z",
    "title_canon_sha256": "7ca156002025e1227b44d43c41d9e40081464f9992923bec02927f4a6545b950"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06868",
    "kind": "arxiv",
    "version": 1
  }
}