Pith Number

pith:USICBLKD

pith:2011:USICBLKD5W7XR2EEVLWI2IDWOX

not attested not anchored not stored refs pending

Generalised k-Steiner Tree Problems in Normed Planes

Charl J. Ras, Doreen A. Thomas, Konrad J. Swanepoel, Marcus N. Brazil

arxiv:1111.1464 v2 · 2011-11-07 · math.CO · cs.DS

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

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	2026-05-18T02:26:39.653787Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a49020ad43edbf78e884aaec8d207675f494fcd61c79249feb118ba2ffc04dd5

Aliases

arxiv: 1111.1464 · arxiv_version: 1111.1464v2 · doi: 10.48550/arxiv.1111.1464 · pith_short_12: USICBLKD5W7X · pith_short_16: USICBLKD5W7XR2EE · pith_short_8: USICBLKD

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/USICBLKD5W7XR2EEVLWI2IDWOX \
  | 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: a49020ad43edbf78e884aaec8d207675f494fcd61c79249feb118ba2ffc04dd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1361601f607fe14c0606ccdc71bc5ca1f72e4260996a54b255b516285724ecfd",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-11-07T01:11:57Z",
    "title_canon_sha256": "a74bda392aa0335db597ee308b263ff34a52f8a700fe2a05b42e2e689beb809b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.1464",
    "kind": "arxiv",
    "version": 2
  }
}