Pith Number

pith:WBIPUDTV

pith:2019:WBIPUDTVVN2TXNHBXVQ7V76UO2

not attested not anchored not stored refs pending

The Neighbor-Locating-Chromatic Number of Pseudotrees

Carmen Hernando, Ignacio M. Pelayo, Liliana Alcon, Marisa Gutierrez, Merc\`e Mora

arxiv:1903.11937 v2 · 2019-03-28 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WBIPUDTVVN2TXNHBXVQ7V76UO2}

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	2026-07-05T08:17:03.084073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b050fa0e75ab753bb4e1bd61faffd476ab43dccb44efb190bff47ebb055ecc51

Aliases

arxiv: 1903.11937 · arxiv_version: 1903.11937v2 · doi: 10.48550/arxiv.1903.11937 · pith_short_12: WBIPUDTVVN2T · pith_short_16: WBIPUDTVVN2TXNHB · pith_short_8: WBIPUDTV

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/WBIPUDTVVN2TXNHBXVQ7V76UO2 \
  | 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: b050fa0e75ab753bb4e1bd61faffd476ab43dccb44efb190bff47ebb055ecc51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6da0deed08b2eab8e0ac2e84c12c95fb8a90c9b060496f993046fd79915a1ee8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-03-28T13:09:14Z",
    "title_canon_sha256": "2314508e9de229c368b49b1f959a66b3980bc8d9c782025131674c07b01597d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.11937",
    "kind": "arxiv",
    "version": 2
  }
}