Pith Number

pith:DPKGDW2P

pith:2018:DPKGDW2PPSNPXKA2RLVKGKTNBJ

not attested not anchored not stored refs pending

Parameterized (Approximate) Defective Coloring

Michael Lampis, R\'emy Belmonte, Valia Mitsou

arxiv:1801.03879 v1 · 2018-01-11 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DPKGDW2PPSNPXKA2RLVKGKTNBJ}

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	2026-05-18T00:26:13.310238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1bd461db4f7c9afba81a8aeaa32a6d0a497872ea4c97a5f6ab398ec5faf129a6

Aliases

arxiv: 1801.03879 · arxiv_version: 1801.03879v1 · doi: 10.48550/arxiv.1801.03879 · pith_short_12: DPKGDW2PPSNP · pith_short_16: DPKGDW2PPSNPXKA2 · pith_short_8: DPKGDW2P

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/DPKGDW2PPSNPXKA2RLVKGKTNBJ \
  | 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: 1bd461db4f7c9afba81a8aeaa32a6d0a497872ea4c97a5f6ab398ec5faf129a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fd90febb31c4ef2d741183934be1f0888fb81236911bc686dbe9918bf205d3a",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-01-11T17:13:11Z",
    "title_canon_sha256": "99021225afa6d40c502baaccf78b9a3816835b0d5acd43eab597ec0d67884f42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.03879",
    "kind": "arxiv",
    "version": 1
  }
}