Pith Number

pith:NPM7CEF4

pith:2018:NPM7CEF4H4XLEMJDPLIA5GWQNI

not attested not anchored not stored refs pending

The topology of the set of non-escaping endpoints

David J. Sixsmith, Vasiliki Evdoridou

arxiv:1802.02738 v1 · 2018-02-08 · math.DS · 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{NPM7CEF4H4XLEMJDPLIA5GWQNI}

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	2026-05-18T00:24:03.211624Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bd9f110bc3f2eb231237ad00e9ad06a32f17203849742575b3d769ad06d16b8

Aliases

arxiv: 1802.02738 · arxiv_version: 1802.02738v1 · doi: 10.48550/arxiv.1802.02738 · pith_short_12: NPM7CEF4H4XL · pith_short_16: NPM7CEF4H4XLEMJD · pith_short_8: NPM7CEF4

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/NPM7CEF4H4XLEMJDPLIA5GWQNI \
  | 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: 6bd9f110bc3f2eb231237ad00e9ad06a32f17203849742575b3d769ad06d16b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bb1d525e0daae9d038cb711b45a40bfabb87366d2bbadd67411c065c388e0e6",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-02-08T08:09:14Z",
    "title_canon_sha256": "a57489f0de6a0bfe83614fa93104c5fcb2c4a65f69726015ed3f8eef88596613"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02738",
    "kind": "arxiv",
    "version": 1
  }
}