Pith Number

pith:5OQU645Z

pith:2016:5OQU645ZVXZ2DCTAWO7BPAUWMF

not attested not anchored not stored refs pending

Generic singularities of line fields on 2D manifolds

CMAP), Ludovic Sacchelli (GECO, Mario Sigalotti (GECO, Ugo Boscain (GECO

arxiv:1605.06295 v1 · 2016-05-20 · 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{5OQU645ZVXZ2DCTAWO7BPAUWMF}

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	2026-05-18T01:14:19.320765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eba14f73b9adf3a18a60b3be178296616b76f05c3a49205ba3b201b97651face

Aliases

arxiv: 1605.06295 · arxiv_version: 1605.06295v1 · doi: 10.48550/arxiv.1605.06295 · pith_short_12: 5OQU645ZVXZ2 · pith_short_16: 5OQU645ZVXZ2DCTA · pith_short_8: 5OQU645Z

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/5OQU645ZVXZ2DCTAWO7BPAUWMF \
  | 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: eba14f73b9adf3a18a60b3be178296616b76f05c3a49205ba3b201b97651face

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a67c672f832006bddead7667a13feb96a787f37874b7c905fbe106993735890",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2016-05-20T11:30:41Z",
    "title_canon_sha256": "33036136fbb7c7d7d3f8fa4458c7a8a49326c3841b7a4d6706ed02220a368429"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.06295",
    "kind": "arxiv",
    "version": 1
  }
}