Pith Number

pith:6ZOJ7FRE

pith:2013:6ZOJ7FRED3JKWPL5MMCDAJ32KZ

not attested not anchored not stored refs pending

Flows and a tangency condition for embeddable CR structures in dimension 3

Jih-Hsin Cheng

arxiv:1305.4451 v1 · 2013-05-20 · math.DG · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6ZOJ7FRED3JKWPL5MMCDAJ32KZ}

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	2026-05-18T03:25:23.648481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f65c9f96241ed2ab3d7d630430277a565dbdea2d3c140187f10dfe4d2fa85a4d

Aliases

arxiv: 1305.4451 · arxiv_version: 1305.4451v1 · doi: 10.48550/arxiv.1305.4451 · pith_short_12: 6ZOJ7FRED3JK · pith_short_16: 6ZOJ7FRED3JKWPL5 · pith_short_8: 6ZOJ7FRE

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/6ZOJ7FRED3JKWPL5MMCDAJ32KZ \
  | 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: f65c9f96241ed2ab3d7d630430277a565dbdea2d3c140187f10dfe4d2fa85a4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aee32562d0629f69a53ace7719ed24afb6605c3ea594d2ba2adcc0adb23bff2e",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-05-20T07:25:44Z",
    "title_canon_sha256": "e156c5798d3727a0f3c94dff8417db4aa52dbc3d8b668e8a8f2933231a79dac5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4451",
    "kind": "arxiv",
    "version": 1
  }
}