Pith Number

pith:VSYUSCFV

pith:2022:VSYUSCFVOR43IARA455MJZJQYO

not attested not anchored not stored refs pending

Classification of Codimension-1 Singular Bifurcations in Low-dimensional DAEs

Haibo Ruan, Ivan Ovsyannikov

arxiv:2201.04222 v1 · 2022-01-11 · 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{VSYUSCFVOR43IARA455MJZJQYO}

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	2026-07-05T03:47:57.830465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

acb14908b57479b40220e77ac4e530c3b19bbfccb4c471a0568107bd3589b562

Aliases

arxiv: 2201.04222 · arxiv_version: 2201.04222v1 · doi: 10.48550/arxiv.2201.04222 · pith_short_12: VSYUSCFVOR43 · pith_short_16: VSYUSCFVOR43IARA · pith_short_8: VSYUSCFV

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/VSYUSCFVOR43IARA455MJZJQYO \
  | 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: acb14908b57479b40220e77ac4e530c3b19bbfccb4c471a0568107bd3589b562

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df6f148a92733a1bd792f5b39ee2f0cf33babc7c1c075e9fe4e89d73487191c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2022-01-11T22:42:02Z",
    "title_canon_sha256": "d2850433dbd99de3c105087a3858fe6e8acb91e76b9bc3c4f84a3ec9c0147924"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.04222",
    "kind": "arxiv",
    "version": 1
  }
}