Pith Number

pith:NG4BPUD2

pith:2018:NG4BPUD23KS37IX4VX6RWTFZI7

not attested not anchored not stored refs pending

S-regular functions which preserve a complex slice

Amedeo Altavilla, Chiara de Fabritiis

arxiv:1801.01318 v1 · 2018-01-04 · 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{NG4BPUD23KS37IX4VX6RWTFZI7}

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	2026-05-17T23:57:07.724647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69b817d07adaa5bfa2fcadfd1b4cb947d43f30f880df6098b211e92ef5195860

Aliases

arxiv: 1801.01318 · arxiv_version: 1801.01318v1 · doi: 10.48550/arxiv.1801.01318 · pith_short_12: NG4BPUD23KS3 · pith_short_16: NG4BPUD23KS37IX4 · pith_short_8: NG4BPUD2

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/NG4BPUD23KS37IX4VX6RWTFZI7 \
  | 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: 69b817d07adaa5bfa2fcadfd1b4cb947d43f30f880df6098b211e92ef5195860

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90358252dceb6d2593a5d06c33bf635322e1ccf99d1fa74db3a7d75f5289f4d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2018-01-04T11:56:46Z",
    "title_canon_sha256": "dbf6a7110a5e7ef70f1af23ad492778c05e6a60cc88c335f0c2c432e68e4d09d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01318",
    "kind": "arxiv",
    "version": 1
  }
}