Pith Number

pith:5NGBHPK3

pith:2019:5NGBHPK3VNLBZIA3CJHURMV5OU

not attested not anchored not stored refs pending

On the segmentation of astronomical images via level-set methods

Maurizio Falcone, Silvia Tozza

arxiv:1904.04798 v1 · 2019-04-09 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5NGBHPK3VNLBZIA3CJHURMV5OU}

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	2026-05-17T23:48:58.156435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb4c13bd5bab561ca01b124f48b2bd753c9cef0a36058050fad8c3c6288405be

Aliases

arxiv: 1904.04798 · arxiv_version: 1904.04798v1 · doi: 10.48550/arxiv.1904.04798 · pith_short_12: 5NGBHPK3VNLB · pith_short_16: 5NGBHPK3VNLBZIA3 · pith_short_8: 5NGBHPK3

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/5NGBHPK3VNLBZIA3CJHURMV5OU \
  | 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: eb4c13bd5bab561ca01b124f48b2bd753c9cef0a36058050fad8c3c6288405be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "759e704502d5696058ec775f94c05300f34cf5a64712541de6aec1b99f530726",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-04-09T17:24:51Z",
    "title_canon_sha256": "39fd93cea7e226fcf9fc25ec6b2e7c12c51795fb4dd654f91948784c0d70e64d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04798",
    "kind": "arxiv",
    "version": 1
  }
}