Pith Number

pith:IYPRWGSQ

pith:2019:IYPRWGSQTGA6TV6GCVUM52DNEI

not attested not anchored not stored refs pending

Godbillon-Vey sequence and Francoise algorithm

Dmitry Novikov, Jessie Pontigo-Herrera, Laura Ortiz-Bobadilla, Pavao Mardesic

arxiv:1901.09268 v1 · 2019-01-26 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IYPRWGSQTGA6TV6GCVUM52DNEI}

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	2026-05-17T23:55:25.272434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

461f1b1a509981e9d7c61568cee86d222f116ddb57f99af3be4bb4b61f5502be

Aliases

arxiv: 1901.09268 · arxiv_version: 1901.09268v1 · doi: 10.48550/arxiv.1901.09268 · pith_short_12: IYPRWGSQTGA6 · pith_short_16: IYPRWGSQTGA6TV6G · pith_short_8: IYPRWGSQ

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/IYPRWGSQTGA6TV6GCVUM52DNEI \
  | 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: 461f1b1a509981e9d7c61568cee86d222f116ddb57f99af3be4bb4b61f5502be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "935e736fb2713acafeae8dc588f56f70ac5c93b630bf37b81c9a1391ee83610d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2019-01-26T19:36:53Z",
    "title_canon_sha256": "bf6b7c97f9b490aacf4483a2a96ffc44374b325adae32b23e1d2efc5cb442298"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09268",
    "kind": "arxiv",
    "version": 1
  }
}