Pith Number

pith:HHKTFU4X

pith:2018:HHKTFU4XETSYROPMIYPB2KGUUZ

not attested not anchored not stored refs pending

Total 2-domination of proper interval graphs

Francisco J. Soulignac

arxiv:1812.00689 v1 · 2018-12-03 · cs.DM · 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{HHKTFU4XETSYROPMIYPB2KGUUZ}

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	2026-05-17T23:59:19.257532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39d532d39724e588b9ec461e1d28d4a64f2f295ddc6d887c110b257f405b85cc

Aliases

arxiv: 1812.00689 · arxiv_version: 1812.00689v1 · doi: 10.48550/arxiv.1812.00689 · pith_short_12: HHKTFU4XETSY · pith_short_16: HHKTFU4XETSYROPM · pith_short_8: HHKTFU4X

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/HHKTFU4XETSYROPMIYPB2KGUUZ \
  | 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: 39d532d39724e588b9ec461e1d28d4a64f2f295ddc6d887c110b257f405b85cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d10e08c16cac1d78016e0049fd4642b866bd202d6f448526321271f7a1c70ea3",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-12-03T11:55:22Z",
    "title_canon_sha256": "9c5131950fde34a3e2cf24b01bb2fa75176d693a6c19160e9502c0e8265ac290"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.00689",
    "kind": "arxiv",
    "version": 1
  }
}